TY  - GEN
AU  - TROEH, FREDERICK
TI  - SOIL AND WATER CONSERVATION: FOR PRODUCTIVITY AND ENVIRONMENTAL PROTECTION
U1  - 631.45 TRO/SO 
CY  - NEW DELHI, PRENTICE-HALL
KW  - CONSERVING SOIL PRODUCTIVITY
KW  - SOIL EROSION AND CIVILIZATION
ER  -