TY  - BOOK
AU  - Lenski,Gerhard Emmanuel
AU  - Lenski,Jean
TI  - Human societies: an introduction to macrosociology 
SN  - 0070371725
PY  - 1974///
CY  - New York
PB  - McGraw-Hill Book
KW  - Sociology
KW  - Social evolution
N1  - Includes bibliogarphical references and index
ER  -