00675nam2 22002171i 450 990002295310403321000229531FED01000229531(Aleph)000229531FED0100022953120030801d--------km-y0itay50------baSeven-membered rings with two or more heteroatoms. Oxford, 1984, v. 7.5, p. 593-651.001000222363Sharp,John Traquair95302ITUNINARICAUNIMARCBK990002295310403321FFABCSeven-membered rings with two or more heteroatoms. Oxford, 1984, v. 7.5, p. 593-651387027UNINAING01