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1
An economic comparison between tractor-operated and carabao-cultivated rice farms [microform]
Published 1976Visual Material -
2
Design, construction and testing of a lowland power rice weeder [microform]
Published 1975Visual Material -
3
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4
An economic comparison between tractor-operated and carabao-cultivated rice farms
Published 1969Thesis -
5
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6
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7
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8