00700nam2 22002171i 450 990002295210403321000229521FED01000229521(Aleph)000229521FED0100022952120030801d--------km-y0itay50------baThree-membered rings with two heteroatomsand fused-ring derivatives. Oxford, 1984,v. 7.5, p. 195-236.001000222363Schmitz,E.95699ITUNINARICAUNIMARCBK990002295210403321FFABCThree-membered rings with two heteroatomsand fused-ring derivatives. Oxford, 1984,v. 7.5, p. 195-236387010UNINAING01