00480nam a22001697a 4500 253787 253786 OSt 20171006091650.0 160517b xxu||||| |||| 00| 0 eng d 8121931649 n/a QA76.76 .C4677 1993 Chopra, Rajiv. Operating systems a practical approach concepts, principles,system programming Ram Nagar,New Dehli S.Chand & Co c2010 xxxii,495p ill lcc BK 0 0 lcc 0 0 NFIC 40404 40404 GEN 2016-05-17 9 QA76.76 .C4677 1993 20087523 2018-02-28 2018-02-14 2016-05-17 BK