000 00239nam a2200097 4500
082 _a005.4 HEC/UNI
100 _aHeck, H J
245 _aUNIX: working with unix and Xenix
_cby Heck, H J
260 _aNew Delhi
_bA I T B S
_c1994
942 _cBK
999 _c380773
_d380773