Book excerpt: Lao is spoken in Laos and northeastern Thailand, where it is called Isan. Focusing on the dialect that is accepted as the central language of the Lao P.D.R., this is the first Lao dictionary to present the correct Vientiane pronunciation. It is designed both for travelers and those wishing to learn native pronunciation. As one of the few Lao-English dictionaries available, the English-Lao section has been expanded for those English speakers who have been seeking such a reference.