Sathasivampillai, K., & De Silva, G. A. C. (1976). Farm business management in the wet zone of Sri Lanka, 1973-1974. Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture.
Lua i Stíl Chicago (17ú heag.)Sathasivampillai, K., agus G. A. C. De Silva. Farm Business Management in the Wet Zone of Sri Lanka, 1973-1974. Peradeniya: Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture, 1976.
Lua MLA (8ú heag.)Sathasivampillai, K., agus G. A. C. De Silva. Farm Business Management in the Wet Zone of Sri Lanka, 1973-1974. Division of Agricultural Economics, Farm Management, and Statistics, Govt. Dept. of Agriculture, 1976.
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