00319nam a2200109Ia 4500008004100000082002000041100001900061245004300080260003600123300002100159650002900180240817s9999    xx            000 0 und d  a621.381958 M29d  aGeoffry martin 0aIndustrial and Manufacturing chemistry  c1917b Crorby Lockwood and sons  axix,496 vol.1 p.  a Electronics Engineering