TY  - BOOK
AU  - Internationa Rice Research Institute.
ED  - Internationa Rice Research Institute.
TI  - Constraints to high yields on asian rice farms : An
U1  - "X9(J381).4.N7, L7" 
PY  - 1977///
CY  - Philippines
PB  - IRRI       
KW  - Rice
ER  -