TY - BOOK AU - Anber,Hamdy Ahmed TI - Studies on microorganisms fixing atmospheric nitrogen PY - 1991/// KW - Nitrogen-fixing microorganisms KW - Nitrogen KW - Fixation N1 - Thesis (M.S.)-- Cairo University, 1991; Includes bibliographical references (leaves [89]-101); Microfiche; ASUNET; Ain Shams University; 2 microfiches : negative ER -