TY  - BOOK
ED  -  United Nations Environment Programme. Industry and Environment Progr amme Activity Centre.
ED  -  International Labour Organization.
TI  -  Environmental aspects of selected non-ferrous metals (Cu, Ni, Pb, Zn , Au) ore mining : : a technical guide
PY  - 1991///
CY  -  Paris : 
PB  -  United Nations Environment Programme, 
KW  -  Nonferrous metal industries
KW  -  Environmental aspects
KW  -  Industrial management
N1  -  "With the assistance of International Labour Office"--Cover;  Spine title: Environmental aspects of selected non-ferrous metals or e mining;  Includes bibliographical references : (p. 85-93)
ER  -