Description:"The status and distribution of each species of gibbon is described in detail for the whole of Vietnam. In addition, to place the species in a regional context, a brief overview is given of distribution and status in other areas of Indochina. In this work, we consider Indochina to comprise the following regions: the Socialist Republic of Vietnam, the Lao People's Democratic Republic, the Kingdom of Cambodia, and southern parts of Yunnan and Guangxi provinces in the People's Republic of China"--p. x.