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Crop production practices and costs by size of farm : Delta area, Mississippi ; 1957 - 58
Starbird, Irving Rollins, (1962)
Incentives to invest in new agricultural inputs in North India
Dobbs, Thomas, (1972)
Efektiviteti i shpenzimeve te͏̈ prodhimit dhe i investimeve ne͏̈ kooperativat bujqe͏̈sore te Kuke͏̈sit
Shahollari, Luan, (1984)