Alfy, Youssef El 5 Engineering Hydraulics For second year civil department / [[Book] :] Youssef El Alfy. - egypt : al hakim press, 2015. - 132 p : ill ; 25 cm. ISBN: 9771932853 Subjects--Topical Terms: Engineering Hydraulics. Dewey Class. No.: 621.2 National Library of Medicine Call No.: 621.2 / A E