海量图书期刊资源，随时随地畅享阅读乐趣
Comparison of the chromatographic properties of sterols, select additional steroids and triterpenoids: gravity-flow column liquid chromatography, thin-layer chromatography, gas—liquid chromatography and high-performance liquid chromatographySihua Xu; Robert A. Norton; Ferrast G. Crumley; W.David Nes · 1988