Aihe-ehdotuksia
Aihe-ehdotuksia
Agriculture
235
Forests and forestry
138
Tropical crops
127
Forest management
72
Deforestation
67
Soils
62
Research
53
lisää ...
1
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Kausijulkaisu
2
Washington, D.C. : Smithsonian Institution, 1987
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Hallinnon asiakirja
Kirja
3
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Aikakauslehti
4
Tekijä Elliott, Stephen D., Blakesley, David, 1959-, Hardwick, Kate
Richmond, Surrey : Kew Publishing, Royal Botanic Gardens, Kew, 2013
Spanish edition.
Richmond, Surrey : Kew Publishing, Royal Botanic Gardens, Kew, 2013
Spanish edition.
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Kirja
5
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Aikakauslehti
6
Nugegoda, Sri Lanka : Department of Forestry and Environmental Science, University of Sri Jayewardenepura, 2011
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Aikakauslehti
8
Tekijä Spears, John
[Washington, D.C.] : World Bank Policy Planning and Research Staff, Environment Department, 1988
[Washington, D.C.] : World Bank Policy Planning and Research Staff, Environment Department, 1988
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Kirja
9
Cali, Colombia : Centro Internacional de Agricultura Tropical (CIAT), 2013
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Aikakauslehti
10
Washington, DC : American Chemical Society, 1955
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Kirja
11
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Aikakauslehti
12
13
Tekijä Mortensen, Ernest
Washington : Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch, 1964
Washington : Dept. of State, Agency for International Development Communications Resources Division, Publications and Technical Services Branch, 1964
Kirja
14
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Aikakauslehti
15
16
17
18
Tekijä Thurston, H. David
St. Paul, Minn. : APD Press, American Phytopathological Society, 1998
2nd ed.
St. Paul, Minn. : APD Press, American Phytopathological Society, 1998
2nd ed.
Kirja
20
Tekijä Goodland, Robert J. A., 1939-
[Washington, D.C.?] : World Bank, 1991
[Washington, D.C.?] : World Bank, 1991
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Kirja