TY - BOOK AU - Newmark, Nathan M. AU - Siess, Chester P., coaut.Penman, Robert R., coaut. TI - Studies of slab and beam highway bridges. part 1: tests of -simple-span right I-beam bridges / Nathan M. Newmark, Chest-er P. Siess and Robert R. Penman CY - Urbana, Illinois : University of Illinois, Engineering Experiment Station ER -