00415nam 2270062 450000100060000000300230000600500090002900800410003808200080007902000160008710000250010326000600012825000060018824500770019470062StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a691 a977-287-282 aKhalil Ibrahim Waked bالقاهرة: دار الكتب العلمية c2003 a4 aDesign of reinforced concrete stairs bAccording new egyptian code 2001