00297nam a2200109Ia 4500008004100000041000800041082001900049100001500068245006100083260003500144300000800179211209s1963    xx            000 0 und d  aeng  a621.75 N63 WAL  aWALKER W F  aENGINEERING PRODUCTIVITY, TOOLS, MACHINES AND PROCESSES   aBOMBAYbB.I. PUBLICATIONc1963  a263