海量图书期刊资源，随时随地畅享阅读乐趣
Birefringence constants and the conformations of 4-nitro- and 4,4′-dinitrodiphenylsS. G. Vul'fson; A. P. Timosheva; V. F. Nikolaev; A. N. Vereshchagin · 1986