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Survey, pathogenecity and control of plant parasitic nematodes associated with major root crops in Leyte [microform]
Publicado em 1980Visual Material -
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The mosaic diseases to maize in the Philippines, Their casual viruzes and vectors [microform]
Publicado em 1980Visual Material -
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Adoption of high yielding rice farming practices by the rice farmers in the Amparai District, Republic of Sri Lanka [microform]
Publicado em 1980Visual Material -
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An economic analysis of sweet potato farms in Eastern Visayan, 1975 [microform]
Publicado em 1980Visual Material