[29]Bartlett,H。 M,50 Years of Social Work in the Medical Setting: Past Significance/Future Outlook, New York: National Association of Social Workers,1993, p。48。
[30]B J, Radola Thin-layer gel filtration of proteins。 II。 Applications。Journal of chromatography, 1968 ,38 (1) :78-90。
[31]A, Morris,A D, Russell Studies on the mode of action of novobiocin。Biochemical pharmacology, 1968 ,17 (9) :19-20。
[32]R M, McCombs,W E, Rawls Density gradient centrifugation of rubella virus。 Journal of virology, 1968 ,2 (5) :409-410。