TY - BOOK AU - Karnovsky,Igor A. AU - Lebed,Olga I. TI - Free vibrations of beams and frames: egenvalues and eigenfuctions SN - 0071431896 AV - TA660.B4 .K37 2004 PY - 2004/// CY - New York PB - McGraw-Hill KW - Girders KW - Vibration ER -