00436nam a22001577a 4500 4803 4803 200901b ||||| |||| 00| 0 eng d 512.943 P9274 3831 Prentis, J. M. Mechanical vibrations : An Introduction to matrix methods London Longmans 1963 vii, 139 p. 16.80 Mechanics 3832 Leckie, F. A. BK 0 0 ddc 0 512_943000000000000_P9274 0 13494 CL CL 1963-12-20 Current Literature Co 512.943 P9274 02912 2020-09-01 BK