title: STEROID SERIES. 13. STEREOCHEMISTRY OF B-NOR-5-ALPHA- AND -5-BETA-6-OXOCHOLESTANE DERIVATIVES.
mesh_terms: D002626:Chemistry, Pharmaceutical; D012106:Research; D013256:Steroids
chemical_list: D013256:Steroids
keywords: CHEMISTRY, PHARMACEUTICAL; EXPERIMENTAL LAB STUDY; STEROIDS