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Fertilizer marketing systems and policies in the developing world
Mudahar, Mohinder S., (1987)
Fertilizer pricing in developing countries : a market-based approach
Srinivasan, Thirukodikaval N., (1986)
The role of fertilizer in sustaining food security and protecting the environment to 2020
Bumb, Balu L., (1996)
Ethiopia : an economic analysis of technological change in four agricultural production systems
Green, David A. G., (1974)
The university as a supportive component of rural infrastructure : review and analysis of the Malawi case
Green, David A. G., (1993)
Literacy and earnings : an investigation of the interaction of cognitive and unobserved skills in earnings generation
Green, David A. G., (2003)