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
SN  - 925101261X
U1  - 631 
PY  - 1982///
CY  - Rome
PB  - FAO
KW  - Soil management
KW  - Cropping systems
KW  - Bacteria
N1  - Present documents prepared on the basis of the workshop on organic meterials and soil productivity in Alexandria; Bibliography: p. 169-188
ER  -