تصفح حسب المؤلف "عثمان, عزمي زكي"
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The influence of certain physical stresses on pulal mortality of Culex pipiens complex L. II. Effect of exposure to oxygen and partial vacuum.
Wakid, A. M.; Hafez, M.; Abdel-Rahman, A. M.; Osman, A. Z.; Hafez, M. K.; واكد, عبد الفتاح مجاهد; حافظ, محمود; عبد الرحمن, أمنية; عثمان, عزمي زكي; حافظ, مديحة كامل... more authors ... less authors ( Qatar University , 1993 , Article)The results indicated that when pupae were exposed to oxygen atmosphere for different periods ranging from V2 - 48 hours, the pupal mortality increased with increasing the exposure periods. The mortality reached to about ...