TY  - BOOK
ED  - National Geographic Society (U.S.).
TI  - As we live and breathe: the challenge of our environment
SN  - 0870440977
U1  - 301.3/1 
PY  - 1971///]
CY  - Washington
PB  - [National Geographic Society
KW  - Human ecology
KW  - Nature
KW  - Effect of human beings on
N1  - A collection of essays by various authors; A people at war with their land;
Ecology, the intricate web of life;
Agriculture: the price of plenty;
Energy: a crisis in the offing;
Industry: perils of production;
Transportation: nation on the go;
Urbanization: the great migration;
Waste: the burden of affluence;
Population: a look to the future;
Concerned people: key to tomorrow

ER  -