The phosphate supply pattern of some Philippine soils with high and low phosphorus contents [microform].

Manylion Llyfryddiaeth
Prif Awdur: Malik, Muhammad Bashir 1935-
Fformat: Visual Material
Iaith:English
Cyhoeddwyd: Quezon City Photoduplication Service. University of the Philippines Library 1977.
Pynciau: