TY  - BOOK
AU  - Ward, Barbara
AU  - Dubos, Rene
TI  - Only one earth: the care and maintenance of a small planet
SN  - 0-393-06391-7
U1  - 614.71 21st
PY  - 1972///
CY  - New York
PB  - W W Norton
KW  - Human ecology
ER  -