TY - CHAP TI - Sociopolitical organization U1 - Optional T2 - Understanding early civilizations: a comparative study AU - Trigger, Bruce G. A2 - Trigger, Bruce G. PB - Cambridge University Press PY - c2003 CY - Cambridge EP - 278 SP - 71 SN - 0521822459 U3 - 990009743790204761 ER -