00689nam0-22002771i-450-99000054639040332120001010000054639FED01000054639(Aleph)000054639FED0100005463920001010d--------km-y0itay50------baitay-------001yyMechanical vibrationsJ. P. Den Hartog4 ed.New YorkMcGraw-Hill195623 cm436 p.Den Hartog,J. P.ITUNINARICAUNIMARCBK99000054639040332105 MA 58 2449DININDININUNINAING01