TY  - BOOK
AU  - Hamdi,Y.A.
ED  - Food and Agriculture Organization of the United Nations.
TI  - Application of nitrogen-fixing systems in soil improvement and management
PY  - 1982///
CY  - Rome
PB  - Food and Agriculture Organization of the United Nations
KW  - Organic fertilizers
KW  - Nitrogen fertilizers
KW  - Soils
KW  - Nitrogen content
N1  - On t.p.: Soil Resources, Management and Conservation Service, Land and Water Development Division
ER  -