D W Smith. (1994). FAO agricultural servicies bulletin Vol.110: Testing and evaluation of agricultural machinery and equipment principles and practices. Rome: FAO.
शिकागो स्टाइल उद्धरणD W Smith. FAO Agricultural Servicies Bulletin Vol.110: Testing and Evaluation of Agricultural Machinery and Equipment Principles and Practices. Rome: FAO, 1994.
एमएलए उद्धरणD W Smith. FAO Agricultural Servicies Bulletin Vol.110: Testing and Evaluation of Agricultural Machinery and Equipment Principles and Practices. Rome: FAO, 1994.
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