Title: Kānphatthanā rūpbǣp thī mo̜som nai withī damnœ̄n ngān wāngphǣn phatthanā khunnaphāp chīwit tām kēn khwāmčham pen phư̄nthān nai radap mūbān
Description: Study based on northeastern Thailand, covers the period January 1, 1990-August 1, 1992.