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21
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22
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23
Ecological study of the Bontoc rice paddy system a case of human-environment interaction
Published 1982Analytics -
24
The effect of phosphorus nutrition of seedlings on growth and yield of rice [microform]
Published 1982Visual Material -
25
Phosphorus chemistry proceedings of the 1981 International Conference
Published 1981Available for University of the Philippines Diliman via ACS Publications. Click here to access
Also available remotely for University of the Philippines Diliman via ACS Publications. Click here to access thru EZproxy
Electronic Resource -
26
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27
Effects of nitrogen and phosphorus ratios on the productivity of brackishwater fishponds
Published 1981Thesis -
28
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29
The NPK nutrition and moisture relation studies and their effects on quality of Virginia tobacco [microform]
Published 1980Visual Material -
30
The role of phosphorus in agriculture
Published 1980Available for UP System via Wiley Online Library
Electronic Resource


