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1
Agricultural research and the rural poor a review of social science analysis 由 Biggs, Stephen
出版 1991索引號: loading...
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2
Developing technologies for the rural poor. 由 Biggs, Stephen
出版 1984索引號: loading...
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3
Generation and diffusion of agricultural technology a review of theories and experiences 由 Biggs, Stephen D.
出版 1983索引號: loading...
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4
The Kosi symposium the rural problem in North-east Bihar.
出版 1976索引號: loading...
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