Parker, D.J.
Self-contained mine rescue oxygen breathing apparatus: a handbook for miners - Washington, D.C. Department of the Interior, Bureau of Mines 1923 - 139 p. ilus.
APARATOS DE RESPIRACION
SEGURIDAD MINERA
A/622.42/P26
Self-contained mine rescue oxygen breathing apparatus: a handbook for miners - Washington, D.C. Department of the Interior, Bureau of Mines 1923 - 139 p. ilus.
APARATOS DE RESPIRACION
SEGURIDAD MINERA
A/622.42/P26