000 00332pam a2200121a 44500
008 160422s9999 xx 000 0 und d
082 _a004.692 PCL
245 _aPC learning labs teaches cc : Mail.
260 _aCalifornia
_b Ziff-Davis Press
_c1993
300 _a254p.
500 _aIncludes Index
650 _aComputer Networking
999 _c78738
_d78738