STUDIES ON THE POPULATION FLUCTUATIONS OF THE PEACH FRUIT FLY, Bactrocera zonata IN MANGO AND CITRUS ORCHARDS AND ITS FIELD CONTROL IN SHARKIA GOVERNORATE, EGYPT

In vitro MICROTUBERIZATION OF SOME POTATO (Solanum tuberosum L.) CULTIVARS AS RESPONSE TO MEDIA CONSTITUENTS AND PHOTOPERIOD

ECONOMICS OF PEACH PRODUCTION AND MARKETING IN NORTH SINAI (In Arabic)