TY  - BOOK
AU  - Lenski,Gerhard Emmanuel
TI  - Human societies: a macrolevel introduction to sociology
AV  - HM51 .L57
U1  - 301 
PY  - 1970///]
CY  - New York
PB  - McGraw-Hill
KW  - Sociology
KW  - Social evolution
N1  - Includes bibliographical references
ER  -