TY  - BOOK
AU  - El-Sissy,Laila Mohamed Hassan
TI  - Microbial transformation of nitrogen in soil under different drainage system
PY  - 1987///
KW  - Soil microbiology
KW  - Soils
KW  - Nitrogen content
KW  - Analysis
KW  - Drainage
N1  - Thesis (Ph.D.) -- Cairo University, 1978; Includes bibliographical reference (leaves 114-130); Microfiche; Cairo, Egypt; ASUNET; 3 microfiche : negative
ER  -