TY  - BOOK
AU  - Brown,Harrison
TI  - The Challenge of man's future
U1  - 300 19
PY  - 1956///
CY  - New York
PB  - The Viking Press
KW  - Humans
KW  - Spines
KW  - Social status
KW  - Sociobiology
N2  - Social science
ER  -