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9
Agriculture
9
Economic aspects
5
Rice
5
Rural conditions
4
Irrigation
3
Rural development
3
Villages
2
Agricultural extension work
2
Agricultural laborers
2
Agriculture and state
2
Dry farming
2
Farm tractors
2
Irrigation farming
2
Land reform
2
Land settlement
2
Land tenure
2
Management
2
Marketing
2
Social aspects
2
Vegetable trade
2
Vegetables
2
Water buffalo
1
Agricultural administration
1
Agricultural colonies
1
Agricultural extension workers
1
Agricultural innovations
1
Agriculture, Cooperative
1
Animal traction
1
Attitudes
1
Banana trade
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21由 Sēnānāyaka, Piyadāsa
出版 1980Colombo : Agrarian Research and Training Institute, 1980.81 p. : maps ; 30 cm.“...Agrarian Research and Training Institute,...”
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22由 Wanigaratne, R. D.
出版 1980Colombo : Agrarian Research and Training Institute, 1980.47 p. ; 30 cm.“...Agrarian Research and Training Institute,...”
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23由 Gunawardena, P. J.
出版 1981Colombo, Sri Lanka : Agrarian Research & Training Institute, 1981.vi, 57 p. ; 29 cm.“...Agrarian Research & Training Institute,...”
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24出版 1979Colombo : Agrarian Research & Training Institute, 1979-1980.5 v. : ill. ; 30 cm.“...Agrarian Research & Training Institute,...”
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25出版 1982[Colombo] : Agrarian Research and Training Institute, 1982.2, 54 p. ; 29 cm.“...Agrarian Research and Training Institute,...”
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26由 Bandara, S. R.
出版 1983Colombo, Sri Lanka : Agrarian Research and Training Institute, 1983.x, 91 p. : ill., maps ; 28 cm.“...Agrarian Research and Training Institute,...”
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27出版 1977Colombo : Agrarian Research and Training Institute, 1977.iv, 22 p. ; 30 cm.“...Agrarian Research and Training Institute,...”
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28由 Ranatunga, A. S.
出版 1981Colombo, Sri Lanka : Agrarian Research & Training Institute, 1981.50 p. ; 30 cm.“...Agrarian Research & Training Institute,...”
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29由 Henegedara, G. M.
出版 1984Colombo : Agrarian Research and Training Institute, 1984.x, 77 p. : map ; 29 cm.“...Agrarian Research and Training Institute,...”
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30出版 1976Colombo : Agrarian Research and Training Institute, 1976.1 online resource (94, [19] p.)“...Agrarian Research and Training Institute,...”
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31由 Krause, Georg, fl. 1977-
出版 1977Colombo : Agrarian Research and Training Institute, 1977.33 p. : maps ; 30 cm.“...Agrarian Research and Training Institute,...”
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32出版 1976Colombo : Agrarian Research and Training Institute, 1976.48 p. ; 30 cm.“...Agrarian Research and Training Institute,...”
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33由 Kariyawasam, C.
出版 1984Colombo, Sri Lanka : Agrarian Research and Training Institute, 1984.74 p. : ill., maps ; 29 cm.“...Agrarian Research and Training Institute,...”
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34由 Perera, I. Ranasinghe
出版 1985Colombo, Sri Lanka : Agrarian Research and Training Institute, 1985.viii, 67 p. : ill., maps ; 29 cm.“...Agrarian Research and Training Institute,...”
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35由 Wanigaratne, R. D.
出版 1975Colombo : Agrarian Research and Training Institute, 1975-1978.4 v. : ill. ; 30 cm.“...Agrarian Research and Training Institute,...”
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36由 Moore, M. P.
出版 1978Colombo : Agrarian Research & Training Institute, 1978.51 p. : graphs ; 31 cm.“...Agrarian Research & Training Institute,...”
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37出版 1983Colombo, Sri Lanka : Agrarian Research and Training Institute, [1983?]ii, 47 p. ; 29 cm.“...Agrarian Research and Training Institute,...”
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38由 Gunawardena, P. J.
出版 1980Colombo : Agrarian Research and Training Institute, 1980.xii, 181 p. : ill. ; 30 cm.“...Agrarian Research and Training Institute,...”
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39出版 1977Colombo : Agrarian Research and Training Institute, 1977.40 p. : map ; 30 cm.“...Agrarian Research and Training Institute,...”
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40由 Crooks, G. R.
出版 1981Colombo : Agrarian Research and Training Institute, 1981.vi, 61 p. ; 29 cm.“...Agrarian Research and Training Institute,...”