00456nam a22001577a 4500 12480 12480 210203b ||||| |||| 00| 0 eng d 621.81 M8781 4614 Morrison,J. L. M. An introduction to the mechanics of machines London Longmans 1964 250p. 45.00 Mechanics 4643 Crossland, Bernard BK 0 0 ddc 0 621_810000000000000_M8781 0 23096 CL CL 1971-12-04 Orient Longmans 621.81 M8781 03769 2021-02-03 BK