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Productivity and returns to inputs of fishpan aquaculture in the Philippines [microform]
Published 1981Visual Material -
15
Shifts in weed and weed seed population under different multiple cropping patterns [microform]
Published 1981Visual Material -
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Development of learning modules in health education for grade IV [microform]
Published 1981Visual Material -
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A chemical study of the essential oil of Pinus Kesiya royle ex gordon (fam. pinaceae) [microform]
Published 1981Visual Material