TY  - BOOK
AU  - Martin, J.H.
AU  - Leonard,W.H.
TI  - Principles of field crop production 3rd edition
SN  - 0 02 979500 1
U1  - 633.973 M 36 P 
PY  - 1967///
CY  - New York
PB  - Macmillan
KW  - Plant
KW  - Medicinal
ER  -