Describes ethnic character of N.E. Thailand population along the border with Laos; the agriculture, husbandry and fishing; and the road, rail, air and river transportation. Contains a classification system for boats and discusses the types, numbers and uses of the vessels on the Mekong. Includes data on traffic patterns and ferry traffic. For the 16 amphoes sharing the river boundary, a topographic description of the amphoe and the physical characteristics of the river drawn from hydrographic data are given. Describes river banks on both sides, including vegetation data. Presents data on health, communications, police, agriculture, road networks, and industry for each amphoe.