TY - BOOK AU - Kelly, James M. AU - Sackman, Jerome, coaut.Javid, Ahmad, coaut. ED - University of California. Earthquake Engineering Research C-enter TI - Javid's paradox : the influence of preform on the modes of -vibrating beams / by James M. Kelly, Jerome L. Sackman, Ahm-ad Javid CY - Berkeley, Calif. : enter ER -