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2061
Cold tolerance of improved rice cultivars at seedling stage [microform]
Published 1977Visual Material -
2062
Problems encountered by students in conducting farming programs in vocational agriculture [microform]
Published 1977Visual Material -
2063
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2064
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2065
Distribution of the forms of nitrogen in some Philippine soils [microform]
Published 1977Visual Material -
2066
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2067
Some characteristics of eight major soil series from the Visayan islands, Philippines and their potassium status [microform]
Published 1977Visual Material -
2068
Hydrolysis of urea and performance of some slow release urea fertilizers in flooded rice [microform]
Published 1977Visual Material -
2069
Effect of PH on the growth of rhizobia and nitrogen fixation in some rhizobium-legume associations [microform]
Published 1977Visual Material -
2070
Milling and seed qualities, and protein content of rice as affected by times of harvest and nitrogen application [microform]
Published 1977Visual Material