Making sulphuric acid in Zambia. 

 - [Lusaka :  Ministry of Education and Culture, Curriculum Development Centre,  1971] 
 - Science reader for pupils .
<br/><br/>v. 1. The lead-chamber process -- v. 2. The contact process. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science -- Study and teaching (Primary)--Science -- Study and teaching (Primary)<br/>Readers -- Science.--Readers -- Science.