00417nam 2270062 450000100060000000300230000600500090002900800410003808200080007902000180008710000250010526000600013025000060019024500770019670062StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a691 a977-287-282-x aKhalil Ibrahim Waked bالقاهرة: دار الكتب العلمية c2003 a4 aDesign of reinforced concrete stairs bAccording new egyptian code 2001