-
1271
Utilization of ricehull and sawdust as components of vegetable growing media [microform]
Published 1977Visual Material -
1272
-
1273
Release of potassium and magnesium from some Philippine soils [microform]
Published 1977Visual Material -
1274
The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform].
Published 1977Visual Material -
1275
Some properties of the forested soils of Mount Makiling and its vegetation [microform].
Published 1977Visual Material -
1276
Availability of inorganic phosphorus fractions and organic phosphorus accumulation in rice soils [microform].
Published 1977Visual Material -
1277
-
1278
Varietal response to different levels of soil moisture tension in upland rice [microform].
Published 1977Visual Material -
1279
Interaction between soil moisture regime and nitrogen level in upland rice [microform].
Published 1977Visual Material -
1280