TY  - GEN
AU  - Heba Mohmed Abdelaziz
AU  - Adel Saad Elhassanin , 
AU  - Samir Ahmed Elshimi , 
TI  - Chelating biofertilizer production from crop residues and its utilization in Affrican marginal soils / 
PY  - 1999///
CY  - Cairo : 
PB  - Heba Mohmed Abdelaziz , 
N1  - Thesis (M.Sc.) - Cairo University - Institute Of African Research and Studies - Department Of Natural Resources
UR  - http://172.23.153.220/th.pdf
ER  -