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1
Parasite and predator populations in insecticide-treated corn field [microform]
Έκδοση 1982Visual Material -
2
The mosaic diseases to maize in the Philippines, Their casual viruzes and vectors [microform]
Έκδοση 1980Visual Material -
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4
Measurement of resistance to corn borer (Ostrinia furnacalis guenee) in a composite variety of maize [microform]
Έκδοση 1979Visual Material -
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