000 002660000a22001090004500
245 _aThe informal sector of Colombo city
110 _aMarga Institute, Colombo LK
260 _aColomboo
_bMarga
_c1979
080 _a711.4(548.7)
_bM3
041 _aEN
942 _cBK
999 _c63119
_d63119