Siddiqi,Zahid Ahmad LRFD Steel Design Aids Based on AISC 2010 LRFD and AASHTO LRFD Bridge Design Specifications - 4th ed. - Lahore : Help Civil Engineering , 2012. - 351 p. CD18283 ISBN: (PB) Subjects--Topical Terms: LRFD Steel,Design Aids Dewey Class. No.: 624.1821 / SID