United Nation/ Economic Commission for Africa <br/><br/>
Development of lead and zinc resources in Africa 

 - Addis Ababa   Economic Commission for Africa  1991 
 - V, 73p.:  ill, pbk.; 
<br/><br/><label>Subjects--Topical Terms: </label><br/>mineral industries--Africa<br/>Lead industry and trade<br/>Zinc industry and trade<br/>Lead--manufacture