TY  - BOOK
AU  - Spencer, Herbert
AU  - Peel, J.D.Y
TI  - On social evolution
SN  - 0226768929
U1  - 301.24 
PY  - 1972///
CY  - Chicago
PB  - University of Chicago Press
KW  - Social Evolution
KW  - Social science methodology
KW  - Socilogy
ER  -