海量图书期刊资源，随时随地畅享阅读乐趣
The conformational equilibrium in N,N′-dimethylhexahydropyrimidinesF.G. Riddell; D.A.R. Williams · 1971
1,2-oxazine chemistry—I : Synthetic approaches to tetrahydro-1,2-oxazinesF.G. Riddell; D.A.R. Williams · 1974