Ramzy Wissa Tawadrous <br/><br/>
Taxonomical and ecological studies on water plants in Egypt Genus Potamogeton L /  
 Genus Potamogeton دراسات تصنيفية و بيءية على الحشائش المائيه لمياه النيل فى مصر-جنس بوتاموجيتون 
Ramzy Wissa Tawadrous ; Supervised Moustafa Imam , Nabiel Elhadidi 
 - Cairo :   Ramzy Wissa Tawadrous ,   1981 
 - 218 Leaves :   photographs ;   30cm 
<br/><br/> Gift from Prof. Kamal Hassan Batanouny 
<br/><br/>Thesis (M.Sc.) - Cairo University - Institute of African Research and Studies - Department of Natural Resources