TY  - BOOK
AU  - De Datta,   S.K.
AU  - Gomez, K.A.
AU  -  Herdt, R.W.
AU  - Barker,  R. 
TI  - A handbook on the methodology for an integrated experiment-survey on rice yield constraints
PY  - 1978///
CY  - The International Rice Research Institute (IRRI)
KW  - Agriculture
ER  -