Child labour situation in some selected Hazardous occupations : a study in Dhaka city / Md. Masum Billah [Thesis MPhil] Billah, Md. Masum QA76 .L78 1981 331.3 BIC Thesis (MPhil) --Institute of Social welfare and Research, University of Dhaka, 2001-2002. Bibliography : p. 232-240. Dhaka : University of Dhaka, 2008. 2008. 2008 Text xxi, 240 p. : eng