http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Disminución de la exposición al polvo peligroso en la perforación de rocas durante la construcción
Reducing hazardous dust exposure when rock drilling during construction. Spanish
National Institute for Occupational Safety and Health
Title from title screen (viewed on Sept. 2, 2010).