-
1261
water transmission properties of some soils in the upper Pampanga River basin [microform]
Published 1977Visual Material -
1262
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1263
Chemical and morphological characteristics of some paddy soils in the Philippines [microform]
Published 1977Visual Material -
1264
Sulfur availability to rice plants and its transfoemation in rice soil and rhizosphere [microform]
Published 1977Visual Material -
1265
The Catbalogan series in Western Samar Island, Philippines [microform]
Published 1977Visual Material -
1266
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1267
-
1268
In situ determination of biological nitrogen fixation by blue-green algae in lowland rice fields [microform].
Published 1977Visual Material -
1269
The effect of delayed compaction on the strength of soil-cement [microform]
Published 1977Visual Material -
1270