ArticleINVESTIGATION OF THREE E.COLI SEROGROUPS (APEC) ISOLATED FROM FERTILE EGGS OF COMMERCIAL CHICKEN IN THE SOUTHERN REGION OF SYRIA
ArticleINVESTIGATION OF THREE E.COLI SEROGROUPS (APEC) ISOLATED FROM FERTILE EGGS OF COMMERCIAL CHICKEN IN THE SOUTHERN REGION OF SYRIA