TY  - BOOK
AU  - Calder, Nigel.
TI  - The environment game
U1  - 301.3 
PY  - 1967///
CY  - London
PB  - Secker & Warburg
KW  - Human beings
KW  - Effect of environment on
KW  - Food supply
KW  - Technology and civilization
ER  -