00463nam a2200133Ia 4500008004100000020001400041040004400055100001500099245006900114260002700183300002700210500007400237700001800311180412s9999||||xx |||||||||||||| ||und||  a471042633  aAhmadu Bello University Library - Zaria  aHein, C.P. 0aDesign of modern steel highway bridgescC.P. Heins, D.A. Firmage  aNew YorkbWileycc1979  aix, 463p.: ill.; 24 cm  a"A Wiley-Interscience publication Includes bibliographical references  aFirmage, D.A.