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3401
Nitrogen fixation by Rhizobiun-legume association and in the rhizosphere of monocotyledonous plants [microform].
Published 1977Visual Material -
3402
In situ determination of biological nitrogen fixation by blue-green algae in lowland rice fields [microform].
Published 1977Visual Material -
3403
Screening of new herbicides for the control of nutsedge (Cyperus rotundus.) in upland rice [microform].
Published 1977Visual Material -
3404
Evaluation of yield and nutritive and sensory qualities of soybeans as a vegetable [microform].
Published 1977Visual Material -
3405
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3406
Comparative evaluation of selection pathways for upland rice breeding [microform].
Published 1977Visual Material -
3407
Effectiveness of diallel selective mating for the improvement of protein content in rice (Oryza sativa L.) [microform].
Published 1977Visual Material -
3408
The effect of insecticides, species diversity and nitrogen fertilizer on insect infestation and yield of cotton [microform].
Published 1977Visual Material -
3409
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3410