الفهرس 
الملخص العربى
Description of the collecting sitessOnly 14 pages are availabe for public view
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Abstract
THE PRESENT WORK AIMS TO STUDY THE TAXONOMY,ECOLOGY AND BIOLOGY OF THE ERPOBDELLIFORM LEECH SALIFA DELICATA WHICH IS DESCRIBED FROM EGYPT FOR THE FIRST TIME SPECIMENS WERE COLLECTED FROM FOUR SITES IN FRESHWATER CANALS IN ASSIUT AND SUHAG DISTRICTS,DURING A PERIOD OF 30 MONTHS;FROM NOVEMBER 1987 TILL APRIL 1990 DESCRIPTION OF THE COLLECTING SITES WERE GIVEN INCLUDING THE MEASUREMENTS OF THE WATER COURES,VALUES OF ENVIRONMENTAL FACTORS SUCH AS WATER TEMPERATURE,PH,CONDUCTIVITY AND DISSOLVED OXYGEN,AND FLORA AND FAUNA OBSERVED