TY  - BOOK
AU  - Abido,Youssef Mohammed Youssef
TI  - Estimation of nitrogen fixation by legumes using isotopie nitrogen techniques
PY  - 1989///
KW  - Nitrogen
KW  - Fixation
KW  - Nitrogen-fixing plants
KW  - Legumes
KW  - Nitrogen fertilizers
N1  - Thesis (Ph.D.) -- Al-Azhar University, 1989; Includes bibliographical references (leaves 119-137); Microfiche; Cairo, Egypt; ASUNET; 3 microfiche : negative
ER  -