TY  - BOOK
AU  - Stoskopf, C. Neal
TI  - Understanding crop production
SN  - 0835980278
AV  - SB91 .S75 1981 
PY  - 1981///
CY  - Virginia
PB  - Reston publishing company
KW  - Crop production
N1  - Includes index
ER  -