TY  - BOOK
AU  - Shepard,Ward
TI  - Food or famine,: the challenge of erosion,
AV  - S623 .S53
U1  - 631.45 
PY  - 1945///
CY  - New York
PB  - The Macmillan Company
KW  - Soil conservation
N1  - "First printing."
ER  -