00529nam a2200157 a 450000500170000000800410001702000150005803500150007305000180008810000270010624501150013326000530024830000190030165000280032070000230034820260819085347.0230712e1993    wk a          000 0 eng d  a9748209792  a.b12408281 4aHD8720.5bP471 aPerera, L.A.S. Ranjith14aThe two decades of informal sector studies :ba bibliography /cby L.A.S. Ranjith Perera and A.T.M. Nural Amin  aBangkok :bAsiain Institute of Technology,c1993  a106 p. :bill.  aInformal sector studies1 aAmin, A.T.M. Nurul