TY  - BOOK
AU  - Ismail,Safwat Ahmed
TI  - Studies on the availability deficiency of zinc in soils of Egypt 
PY  - 1990///
KW  - Soils
KW  - Zinc content
KW  - Sandy soils
KW  - Calcareous soils
KW  - Research
N1  - Thesis (Ph.D.) -- El-Mini University, 1990; Includes bibliographical references (leaves 76-89); Microfiche; Cairo, Egypt; ASUNET; 2 microfiche : negative
ER  -