TY  - BOOK
AU  - P F WAREING
TI  - POTENTIAL CROP PRODUCTION
SN  - 0435629905
U1  - GN631.5W229PC2 
PY  - 1971///
CY  - LONDON
PB  - HEINEMANN EDUCATIONAL BOOKS
KW  - POTENTIAL CROP PRODUCTION
N1  - MODERN BOOK
ER  -