A gorgeous oversize survey of the 18th-century palaces, towns, parks and gardens in Russia designed by Charles Cameron, the Scottish architect to the court of Catherine the Great. With 190 black-and-white and 100 color illustrations, including architectural drawings and engravings, watercolors and modern color photographs. Shvidkovsky is a leading historian of Russian architecture. Appropriate attention is devoted to Catherine's Palace at Pushkin (Tsarkoye Selo) and Pavlovsk.  (RUS259, $80.00)