1.
Arnell NW. Hydrology and global environmental change. Vol. Understanding global environmental change. Harlow: Prentice Hall; 2002.
    
  
    2.
Arnell NW. Hydrology and global environmental change. Vol. Understanding global environmental change. Harlow: Prentice Hall; 2002.
    
  
    3.
Kump LR, Kasting JF, Crane RG. The earth system. 3rd ed. San Francisco: Prentice Hall; 2010.
    
  
    4.
Ruddiman WF. Earth’s climate: past and future. New York: W. H. Freeman; 2001.
    
  
    5.
Summerfield MA. Global geomorphology: an introduction to the study of landforms. Harlow: Longman Scientific & Technical; 1991.
    
  
    6.
Sverdrup KA, Armbrust EV. An introduction to the world’s oceans. 10th ed. Boston [Mass.]: McGraw-Hill; 2009.
    
  
    7.
Ward RC, Robinson M. Principles of hydrology. 4th ed. London: McGraw-Hill; 2000.
    
  
    8.
Barry RG, Chorley RJ. Atmosphere, weather and climate. 8th ed. London: Routledge; 2003.
    
  
    9.
Christopherson RW. Geosystems: an introduction to physical geography. 7th ed. Upper Saddle River, N.J.: Pearson/Prentice Hall; 2009.
    
  
    10.
Kump LR, Kasting JF, Crane RG. The earth system. 3rd ed. San Francisco: Prentice Hall; 2010.
    
  
    11.
Wright JB, Rothery DA, Open University. Oceanography Course Team. The ocean basins: their structure and evolution [Internet]. 2nd ed. Oxford: Butterworth-Heinemann; 1998. Available from: http://www.sciencedirect.com/science/book/9780750639835
   
  
    12.
Wright J, Colling A, Open University. Seawater: its composition, properties and behaviour. 2nd ed. Vol. Oceanography series. Oxford: Pergamon in association with the Open University; 1995.
    
  
    13.
Barry RG, Chorley RJ. Atmosphere, weather and climate. 8th ed. London: Routledge; 2003.
    
  
    14.
Colling A, Open University. Ocean circulation. 2nd ed. Oxford: ButterworthHeinemann; 2001.
    
  
    15.
Colling A, Open University. Ocean circulation. 2nd ed. Oxford: ButterworthHeinemann; 2001.
    
  
    16.
Park D, Wright J, Colling A, Open University. Waves, tides and shallow-water processes. 2nd ed. Oxford: Butterworth-Heinemann in association with the Open University; 1999.
    
  
    17.
Barry RG, Chorley RJ. Atmosphere, weather and climate. 8th ed. London: Routledge; 2003.
    
  
    18.
Maslin M. Global warming: a very short introduction. 2nd ed. Vol. Very short introductions. Oxford: Oxford University Press; 2009.
    
  
    19.
Barry RG, Chorley RJ. Atmosphere, weather and climate. 8th ed. London: Routledge; 2003.
    
  
    20.
Ahrens CD. Meteorology today. 9th ed. Belmont, Calif: Brooks/Cole; 2009.
    
  
    21.
Maslin M. Global warming: a very short introduction. 2nd ed. Vol. Very short introductions. Oxford: Oxford University Press; 2009.
    
  
    22.
Zachos J, et al. Trends, Rhythms, and Aberrations in Global Climate 65 Ma to Present. Science [Internet]. 292(5517):686–93. Available from: http://www.jstor.org/stable/3083539?seq=1#page_scan_tab_contents
   
  
    23.
David M. Olson. Terrestrial Ecoregions of the World: A New Map of Life on Earth. BioScience [Internet]. 51(11):933–8. Available from: http://libproxy.ucl.ac.uk/login?url=http://www.jstor.org/stable/10.1641/0006-3568(2001)051%5B0933:teotwa%5D2.0.co;2
   
  
    24.
Lewis SL, et al. The 2010 Amazon Drought. Science. 4 AD;331(6017):554–554.
    
  
    25.
Lovelock J. Gaia: The living Earth. Nature. 18 AD;426(6968):769–70.
    
  
    26.
Christopherson RW. Geosystems: an introduction to physical geography. 8th ed. Upper Saddle River, N.J.: Prentice Hall; 2012.
    
  
    27.
Peter Francis. Atmosphere, earth and life [Internet]. Milton Keynes: Open University; 1997. Available from: http://copac.jisc.ac.uk/id/26068408?style=html&title=Earth%20and%20life.Atmosphere%2C%20earth%20and%20life
   
  
    28.
Arnell NW. Hydrology and global environmental change. Vol. Understanding global environmental change. Harlow: Prentice Hall; 2002.
    
  
    29.
Shiklomanov IA. Appraisal and Assessment of World Water Resources. Water International. 25(1):11–32.
    
  
    30.
Oki T, Kanae S. Global Hydrological Cycles and World Water Resources. Science [Internet]. 25 AD;313(5790):1068–72. Available from: http://libproxy.ucl.ac.uk/login?url=http://www.jstor.org/stable/3847070?seq=1#page_scan_tab_contents
   
  
    31.
Ward RC, Robinson M. Principles of hydrology. 4th ed. London: McGraw-Hill; 2000.
    
  
    32.
Holden J. An introduction to physical geography and the environment. Harlow: Pearson Prentice Hall; 2005.
    
  
    33.
Alexander D. Natural disasters. London: UCL Press; 1993.
    
  
    34.
Ward RC, Robinson M. Principles of hydrology. 4th ed. London: McGraw-Hill; 2000.
    
  
    35.
Hiscock KM. Hydrogeology: principles and practice. Malden, Mass: Blackwell; 2005.
    
  
    36.
Kaser G, Osmaston H. Tropical glaciers. Vol. International hydrology series. Cambridge: Cambridge University Press; 2002.
    
  
    37.
Kaser G, Großhauser M, Marzeion B. Contribution potential of glaciers to water availability in different climate regimes. Proceedings of the National Academy of Sciences of the United States of America [Internet]. 23 AD;107(47):20223–7. Available from: http://libproxy.ucl.ac.uk/login?url=http://www.jstor.org/stable/25756679?seq=1#page_scan_tab_contents
   
  
    38.
Taylor RG, et al. Recent glacial recession and its impact on alpine riverflow in the Rwenzori Mountains of Uganda. Journal of African Earth Sciences. 55(3–4):205–13.
    
  
    39.
Ward RC, Robinson M. Principles of hydrology. 4th ed. London: McGraw-Hill; 2000.
    
  
    40.
Ollier C, Clayton KM. Weathering. 2nd ed. Vol. Geomorphology texts. London: Longman; 1984.
    
  
    41.
Strahler AN. Physical geography. New York: Wiley; 1951.
    
  
    42.
Summerfield MA. Global geomorphology: an introduction to the study of landforms. Harlow: Longman Scientific & Technical; 1991.
    
  
    43.
David L. Linton. The Problem of Tors. The Geographical Journal [Internet]. 121(4):470–87. Available from: http://libproxy.ucl.ac.uk/login?url=http://www.jstor.org/stable/1791756?origin=crossref&seq=1#page_scan_tab_contents
   
  
    44.
Ollier C, Clayton KM. Weathering. 2nd ed. Vol. Geomorphology texts. London: Longman; 1984.
    
  
    45.
Summerfield MA. Global geomorphology: an introduction to the study of landforms. Harlow: Longman Scientific & Technical; 1991.
    
  
    46.
Taylor RG, Howard KWF. Post-Palaeozoic evolution of weathered landsurfaces in Uganda by tectonically controlled deep weathering and stripping. Geomorphology. 25(3–4):173–92.