TY  - BOOK
AU  - Joan Davidson
AU  -  Richard Lloyd, 
TI  - Conservation and agriculture
SN  - 0-471-99502-9
U1  - 630.2 
PY  - 1977///
CY  - New York
PB  - John Wiley & Sons
N1  - Joan Davidson & Richard Lloyd: Conservation and agriculture.  New York.  John Wiley & Sons, 1977. 0-471-99502-9--(630.2DAV)
ER  -