Alcantara, A. J. (1977). Nitrogen fixation by Rhizobiun-legume association and in the rhizosphere of monocotyledonous plants [microform]. Photoduplication Service, University of the Philippines Library.
Παραπομπή σε μορφή Chicago (17η εκδ.)Alcantara, Antonio Javina. Nitrogen Fixation by Rhizobiun-legume Association and in the Rhizosphere of Monocotyledonous Plants [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Παραπομπή σε μορφή MLA (9th εκδ.)Alcantara, Antonio Javina. Nitrogen Fixation by Rhizobiun-legume Association and in the Rhizosphere of Monocotyledonous Plants [microform]. Photoduplication Service, University of the Philippines Library, 1977.
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