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Farm power and employment in Asia : performance and prospects ; proceedings of a regional seminar held at the Agrarian Research and Training Institute, Colombo, Sri Lanka, on 25. - 29.10.1982
Farrington, John, (1984)
Proceedings of the International Conference on Rural Development Technology : An integrated approach. Bangkok, Thailand, 21.-24.6.1977
Singh, G., (1977)
The economics of tractors in South Asia : an analytical review
Binswanger, Hans P., (1978)