الفهرس 
Arabic summary
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Abstract
DURING THE PRESENT INVESTIGATION ,THE MYXOSPORIDIAN PARASITES OF FISHES WERE STUDIED .FOR THIS REASON 480 FRESH-WATER FISHES WERE COLLECTED FROM THEV RIVER NILE AT ASSUIT PROVINCE,DURING A PERIOD OF TWO YEARS FROM OCTOBER 1985 TILL SEPTEMBER 1987.THE FISHES COLLECTED REPRESTING TEN SPECIES BELONGING TO EIGHT DIFFERENT FAMILIES.