00422nam a22001457a 450000500170000000800410001702000150005802000210007305000120009410000220010624500640012826000420019230000200023470000220025420260313141542.0260313b        |||||||| |||| 00| 0 eng d  a0333346785  a0333346793 (PBK)  aQA76.T4  aTheaker, J. Colin  aA Practical Course on Operating Systems /cColin J. Theaker  aLondonbThe Macmillan Press Ltdc1983  a203p, ill;bHbk  aGraham R. Brookes