[S.M.K.B. Nandaratne]

Agrarian Research and Training Institute 1993 Research study series 89

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Agrarian Research and Training Institute 1991 Documentation series / Agrarian Research and Training Institute no. 12

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Agrarian Research and Training Institute 1982 Occasional publication series 27

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J. Farringron ... [et al.]

Agrarian Research and Training Institute 1980 Research study series no. 43 . Farm power and water use in the dry zone ; pt. 1

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Agrarian Research and Training Institute 1977 Research study series no. 14

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Agrarian Research and Training Institute

The Institute 1974-1975 Research study series No. 6-11

pt. 1: Hambantota district , pt. 2: Kandy district , pt. 3: Polonnaruwa district , pt. 4: Anuradhapura district , pt. 5: Colombo district , pt. 6: comparative analysis

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