000 00255nam a22001097a 4500
999 _c511306
_d511306
082 _aI57 In2
100 _aThyagarajan, M.
_910727
245 _aPreliminary Exercises Pert/Cpm
260 _aNew Delhi
_bIIPA
300 _a8p.
650 _aCounterpoint
_910912