Roquya Siddqi Nitrogen Metabolism methanobacterium Formicicum MF / Roquya Siddqi - Islamabad: Allama Iqbal Open University, 1987. - 185p. HB PHD Thesis Subjects--Topical Terms: Metalledism EcologyDissertations, Academic--PHD Biology Dewey Class. No.: 574 / RON