00441nam a2200133Ia 4500008004100000040001700041082002000058110003000078245007900108260003500187300001500222440003500237650003500272190327s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta672bU58P  aUnited Nations (New York) 0aProblems of air and water pollution arising in the Iron and steel industry  aNew YorkbUnited Nationsc1970  aviii, 86p.  aEconomic Commission for Europe  aAir-Pollution; Water-Pollution