Mostafa Mostafa Mostafa Aly Hamada <br/><br/>
A Study on indicators for the sustainability of agro - ecosystems in Africa /  
 دراسة عن مؤشرات تواصل النظم البيئية الزراعية فى افريقيا 
Mostafa Mostafa Mostafa Aly Hamada ; Supervised Samir Ibrahim Ghabbour 
 - Cairo :   Mostafa Mostafa Mostafa Aly Hamada ,   1997 
 - 398 Leaves :   charts ;   30cm 
<br/><br/>Thesis(Ph.D.) - Cairo University - Institute of African Research and Studies - Department of Natural resources