海量图书期刊资源，随时随地畅享阅读乐趣
Molecular weight distribution and mechanical behavior of PBI fibersD. R. Wiff; Matatiahu Gehatia; Anthony Wereta · 1975
Solution of Fujita's equation for equilibrium sedimentation by applying Tikhonov's regularizing functionsMatatiahu Gehatia; D. R. Wiff · 1970