As per the ministry of Finance, Govt of India, OM 23(7)-EII (A)/83 dated 7th Feb 1984,
(GFR 116(2) (1) (1979)), clearly mentioned in s.no 7 as The Good Offices Committee (GOC) rates should not be used for exchange rates as it is not a fully represented body now. Proof of RBI/Nationalized bank exchange selling rates having prices in foreign currencies on the date of invoice for (a) books and Other monographs, and (b) actual date for remittance to the publishers in case of journal subscriptions.
Still why our Librarians are accepting GOC rates( which having only publishers monopoly) for procurement of foreign books and journals.