00390nam 2218160 450000100060000000300230000600500090002900800410003808200080007910000310008726000680011830000080018624500640019418160StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a039 aAisha saleh MOhammed Mayas bEGYPT: University Ain shams/ Faculty of Edcation/Dep che c2004 a148 aStudies on Substituted Nitrogen Bridgehead Pyridopyimidines