Perera, L.A.S. Ranjith The two decades of informal sector studies : a bibliography / by L.A.S. Ranjith Perera and A.T.M. Nural Amin - Bangkok : Asiain Institute of Technology, 1993 - 106 p. : ill. ISBN: 9748209792 Subjects--Topical Terms: Informal sector studies LC Class. No.: HD8720.5 / P47