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4
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Rice machinery development and mechanization research : January 1 - June 30, 1975 / Amir U. Khan...[et al.].
- International rice research institute (IRRI). Agricultural engineering department,
- [ca. 1975].
- Manila :
-
Rice machinery development and mechanization research : July 1 - December 31, 1975 / Amir U. Khan...[et al.].
- International rice research institute (IRRI). Agricultural engineering department,
- 1975.
- Manila :
-
Deep placement fertilizer applicator project : January 1 to June 30, 1985 / by Amir U. Khan.
- International rice research institute (IRRI). Agricultural engineering department,
- 1985.
- Manila :
-
Deep placement fertilizer applicator project : July 1 to December 31, 1984 / by Amir U. Khan.
- International rice research institute (IRRI). Agricultural engineering department,
- 1984.
- Manila :