TY  - BOOK
AU  - Eckholm,Erik P.
TI  - Losing ground: environmental stress and world food prospects 
SN  - 0393064107
PY  - 1976///
CY  - New York
PB  - Norton
KW  - Agriculture
KW  - Environmental aspects
KW  - Food supply
KW  - Soil erosion
KW  - Nature
KW  - Effect of human beings on
ER  -