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41
Resistance of isolates of Piricularia Oryzae to fungicides [microform]
Published 1975Visual Material -
42
Influence of nitrogen and plant spacing in the yield components of non-photoperiod sensitive rice varities [microform]
Published 1975Visual Material -
43
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44
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45
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46
Hygroscopicity and longevity of some crop seeds at College, Laguna, Philippines [microform]
Published 1975Visual Material -
47
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48
Timing of nitrogen application on lowland rice vareities differing in growth duration [microform]
Published 1975Visual Material -
49
The adoption of a new variety (IRS) in a Philippine community [microform]
Published 1975Visual Material -
50