Section: Articles Title: Respiratory symptons among waste-picking child laborers : a cross-sectional study / Danilo A. Hernández Romero... [et al.] Related records: En: International journal of occupational and environmental health. - Massachusetts : Hamilton Hardy Publishing, Inc., 2010- = ISSN 1077-3525. - 2 - april/june 2010Other categories: 87 Rights: In Copyright (InC) Referencias externas: earth MÁS INFORMACIÓN See issue detail