TY  - BOOK
AU  - Delorit,Richard J.
AU  - Ahlgren,Henry Lawrence
TI  - Crop production
T2  - Prentice-Hall vocational agriculture series
U1  - 633 23
PY  - 1954///, c1959
CY  - Englewood Cliffs, N.J.
PB  - Prentice-Hall
KW  - Field crops
ER  -