Castaneda, A. A. (1978). A study of soil deposition as a field laboratory for teaching high school science classes [microform]. Photoduplication Service. University of the Philippines Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)Castaneda, Azucena A. A Study of Soil Deposition as a Field Laboratory for Teaching High School Science Classes [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1978.
Παραπομπή σε μορφή MLA (9th εκδ.)Castaneda, Azucena A. A Study of Soil Deposition as a Field Laboratory for Teaching High School Science Classes [microform]. Photoduplication Service. University of the Philippines Library, 1978.
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