Fresh-water molluscs from the Late Caenozoic in the south of Eastern Europe. Part II: Family Sphaeridae, Pisidiidae, Corbiculoidae, Neritidae, Viviparidae, Valvatidae, Bithyniidae, Lithoglyphidae, Melanopsidae. National Academy of Sciences of Ukraine, Institute of Geological Science, Kiev, 2007: 1-255. 98 [Zoological Record Volume 146]