TY  - BOOK
AU  - Butler, M.D.
TI  - Conserving soil
U1  - 631.45 
PY  - 1955///
CY  - New York
PB  - Van Nostrand Reinhold Company
KW  - Soil and Soil conservation
KW  - Control of soil erosion
KW  - Conserving soil
ER  -