-
1921
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1922
Resistance to the brown planthopper Nilaparvata lugens (Stal) in rice varieties [microform]
出版 1977Visual Material -
1923
Sampling technique for estimation of rice stem-borer's incidence in farmer's fields [microform]
出版 1977Visual Material -
1924
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1925
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1926
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1927
The incidence of thermophilic spoilage bacteria in Philippine refined sugar [microform]
出版 1977Visual Material -
1928
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1929
Musical references from books published before 1900 in the U.P. Filipiniana Library [microform]
出版 1977Visual Material -
1930