00426nam a2200145Ia 4500003000900000008004100009020001800050040001600068080001600084100001900100245008400119260003500203300001400238650002800252IN-BaIIA211028s9999    xx            000 0 eng d  a81-224-0552-5  cIIA Library  a681.31bAZA  aAzam, Mohammed 0aUNIX in easy stepscMohammed Azam                                                aNew DelhibWiley Easternc1993  aix, 235p.  aUNIX, Operating systems