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MARC 主机 00000nam  2200000 a 4500 
001    0877691940 
008    940124s1974    paua     cr   000   eng   
010    73022382 
020    0877691940 
050  4 QA76.5|b.A789 1974 
082 04 001.6/4/044 
110 2  Auerbach Publishers. 
245 10 Auerbach guide to operating systems. 
260    Philadelphia,|c[1974] 
300    iii, 165 p :|billus ;|c28 cm. 
650  0 Electronic digital computers|xDirectories. 
650  0 Electronic digital computers|xCatalogs.