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261
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262
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263
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264
Socio-economic implications of high yielding varieties evidence from primary data
प्रकाशित 1975पुस्तक -
265
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266
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267
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268
A survey of the problems of rice production in Tandag, Surigao del Sur from 1960 to 1969 [microform]
प्रकाशित 1975Visual Material -
269
Changes in rice farming in Gapan, Nueva Ecija a case study [microform]
प्रकाशित 1975Visual Material -
270
The adoption of a new variety (IRS) in a Philippine community [microform]
प्रकाशित 1975Visual Material