机译:STATISTICAL ESTIMATION OF PRODUCTION FUNCTIONS AND AGRICULTURAL COSTS AND MEASURES OF PRODUCTIVITY EFFICIENCY OF WATER USERS' ASSOCIATIONS OF DIFFERENT IRRIGATION SYSTEMS IN AL-BEHEIRA GOVERNORATE
机译:SYNERGISTIC EFFECT OF SOME PLANT EXTRACTS AND ANTIBIOTIC DRUGS AGAINST STAPH. AUREUS ISOLATED FROM PLEURAL FLUID IDENTIFICATION OF THE ACTIVE COMPOUNDS