TY - BOOK AU - Walton,Harry TI - The how and why of mechanical movements: exactly how machines work: engines, turbines, transmissions, brakes, clutches, rockets, atomic generators, gyroscopes, guidance systems AV - TJ146 .W34 U1 - 621.8 PY - 1968///] CY - New York PB - Popular Science Pub. Co. KW - Machinery KW - Local N1 - 920408 ER -