00436nam a2200145Ia 450000500170000000800410001702000180005804100080007608200150008410000170009924500360011626000430015230000110019565000840020620191125111335.0190710s9999    xx            000 0 und d  a0 907563-43 0  aeng  a001.6424 W  aWalsh, James 0aSpectrum machine code made easy  aLondonb: Interface Publishers, c1983  a221p.   aComputer science a| Flow - Charting a| Computer codes a| Machinery language