A guide to 200 examples of modern architecture in Havana including hotels, private homes, churches and social clubs. Organized by neighborhood, it includes street maps, plans and a good selection of archival and modern photographs. Half of the examples given were built as private houses although many are today used as offices and diplomatic residences. The author is director of Cuba's "Revista Arquitectura." An excellent reference for visitors with a serious interest in modern architecture.  (CBA45, $29.95)