-
1
-
2
-
3
Potassium supplying capacity of some coconut soils in the Philippines [microform]
Izdano 1977Visual Material -
4
-
5
the potassium supplying capacity of several Philippine soils under two moisture regimes [microform]
Izdano 1976Visual Material -
6
An experimental study of the radiometric determination of potassium content of soils and minerals [microform]
Izdano 1975Visual Material -
7
-
8
-
9
-
10