000 00270nam a2200121Ia 4500
082 _a004
_bLIT
100 _aLitton, Gerry
245 _aUnderstanding PFS: first choice
260 _aNew Delhi
_bB. P. B.
300 _a489 p.
650 _aComputer Science
044 _aIndia
999 _c2243
_d2243