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The Contribution of Genetic Resources and Diversity to Wheat Productivity: A Case from the Punjab of Pakistan
Hartell, Jason G., (1997)
Sources of Productivity Growth in Wheat: A Review of Recent Performance and Medium- to Long-Term Prospects
Rejesus, Roderick M., (1999)
Comment: Gendered impacts of fertilizer subsidy removal programs in Malawi and Cameroon
Smale, Melinda, (1994)