TY  - BOOK
AU  - Khadr,Mohamed Saleh
TI  - Studies on nitrogen fixing blue-green algae in Egyptian soils 
PY  - 1975///
KW  - Cyanobacteria
KW  - Nitrogen-fixing algae
KW  - Soils
N1  - Thesis (Ph.D.)-- Al-Azhar University, 1975; Includes bibliographical references (leaves 147-165); Microfiche; ASUNET; Ain Shams University; 4 microfiches : negative
ER  -