SAHAR M. M. EL-BASIONI. "A STUDY OF THE PROSPECTIVE ROLE OF AGRICULTURAL EXTENSION IN MAXMIZATION THE PRODUCTIVITY OF FISH AQUACULTURE AT SOME AREAS IN EL-SHARKIA, EL- DAKAHLEYA AND EL-BEHAIFtA GOVERNORATES", Egyptian Journal of Agricultural Research, 84, 2, 2006, 617-625. doi: 10.21608/ejar.2006.230683