Silvester, Peter P.. The unix system guide book / Peter P. Silvester. - 2nd ed / . - New Delhi : Narosa Publishing House , 1988. - xii,344p. : ill. ; 21cm . NULL ISBN: 8185198160 Rs. 130.00 Subjects--Index Terms: OPERATING SYSTEMS (COMPUTERS)-UNIX Dewey Class. No.: 005.432U / SIL/U