Manu Seetisarn. (1978). Impact of multiple cropping in the Chiang Mai Valley. Council for Asian Manpower Studies, University of the Philippines.
Chicago-referens (17:e uppl.)Manu Seetisarn. Impact of Multiple Cropping in the Chiang Mai Valley. Quezon City: Council for Asian Manpower Studies, University of the Philippines, 1978.
MLA-referens (9:e uppl.)Manu Seetisarn. Impact of Multiple Cropping in the Chiang Mai Valley. Council for Asian Manpower Studies, University of the Philippines, 1978.
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