00338nam a2200121Ia 450000500170000000800410001708200160005810000220007424500410009626000380013730000090017565000320018420240821155201.0240821s9999||||xx |||||||||||||| ||und||  a608.092 BAC  aBachman, Frank P. 0aGreat inventors and their inventions  aNew YorkbAmerican Book Co.c1941  a304p  aAPPLIED SCIENCES/TECHNOLOGY