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Deep placement fertilizer applicator project : July 1 to December 31, 1983 / by Amir U. Khan.
- 853
- International Rice Research Institute,
- 1983.
- Manila :
-
Deep placement fertilizer applicator project : January 1 to June 30, 1983 / by Amir U. Khan.
- 853
- International Rice Research Institute,
- 1983.
- Manila :