00254nam a2200097Ia 4500008004100000041000800041100001900049245003600068260004400104300000800148211209s1950    xx            000 0 und d  aeng  aLEEMING JOSEPH  aROYON THE FIRST MAN MADE FIBER   aN YbCHEMICAL PUBLISHING CO I N Cc1950  a203