TY  - BOOK
AU  - Eckholm,Erik P.
TI  - Losing ground: environmental stress and world food prospects 
SN  - 0393064107
AV  - S589.7 .E23 1976
U1  - 333.7/5 
PY  - 1976///
CY  - New York
PB  - Norton
KW  - Agriculture
KW  - Environmental aspects
KW  - Nature
KW  - Effect of human beings on
KW  - Food supply
KW  - Soil erosion
KW  - Ecología agrícola
KW  - Hombre
KW  - Influencia sobre la naturaleza
KW  - Suelos
KW  - Erosión
N1  - Includes bibliographical references (p. [203]-219) and index
UR  - http://www.archive.org/details/losinggroundenvi00eckhrich
UR  - http://www.openlibrary.org/books/OL5212520M
ER  -