Half-Yearly Journal of the Inst of Engg (India)- Technicians' Journal [ AITC ](Half- Yearly): Vol.No.91 June'2010 - National - kolkata R K Sanan [ IEI ] 2010 - 26PP - 91 . Subscription Period- 2010-11(Jan to Dec) Subjects--Topical Terms: AITC Subjects--Facted Index Terms: JournalInstEngg(India)-Technicians'Journal[AITC](Half-Yearly):Vol.No.91June'20110AITC