TY  - GEN
AU  - Clark, N. A.
AU  - Undersander, D. J
AU  - Decker, A. M
TI  - Field crops: laboratory manual
U1  - 633 
PY  - 1976///
CY  - Maryland
PB  - Agronomy Department University
KW  - Agriculture and related technologies
KW  - Field and plantation crops
ER  -