Describes all organogermanium compounds containing organic and inorganic groups bonded through oxygen to Ge such as -OH, -OR, -OOCR, -OS, -ON, -OP, etc. Includes germanium oxides of the R3GeOGeR3 type as well as bi- and trinuclear derivatives of polybasic acids. Compounds may have additional Ge-H and Ge-halogen bonds. Contains an empirical formula index and a ligand formula index.- Literature closing date: end of 1990.