00761nam a2200229Ia 4500 56298 BIBL 20160527190206.0 691009s1968 nyua 00100 eng 68031227 EVLR TJ146 .W34 621.8 621.8 W239h Walton, Harry. 187068 Local The how and why of mechanical movements exactly how machines work: engines, turbines, transmissions, brakes, clutches, rockets, atomic generators, gyroscopes, guidance systems. Illustrated by Ray Pioch. New York Popular Science Pub. Co. [1968] 297 p. illus. (part col.) 26 cm. 7.95 920408 Machinery 129152 Local 42955 42955 0 0 0 621_800000000000000_W239H 0 evref 108027 10 10 9 2016-05-27 81528 0 621.8 W239h 80000000121338 2016-05-27 00:00:00 r:56298 z:NCC:D 9