Hassan Abdelkhair Hassan Ahmed <br/><br/>
Genetic and serological variations between Egyptian isolates of the pear blight pathogen /  
 الاختلافات الوراثية والسيرولوجية بين العزلات المصرية لمسبب لفحة الكمثرى 
Hassan Abdelkhair Hassan Ahmed ; Supervised F.M.Barakat , M.S.Mikhail , H.I.Seif Elnasr 
 - Cairo :   Hassan Abdelkhair Hassan Ahmed ,   1999 
 - 146Leaves :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty Of Agriculture - Department Of Plant Pathology and Physiology