John Weingaten 1,2,3 for DOS ( Release 4 ) for Dummics - 1st Ed - New Delhi Pustak Mahal 1995 - 347p John Weingaten: 1,2,3 for DOS ( Release 4 ) for Dummics. (1st Ed) New Delhi. Pustak Mahal, 1995.--(001.642WEI) ENGLISH Dewey Class. No.: 1.642 / WEI