HENDERSON, Kay <br/><br/>
Pollution; sources of information. Proceedings of a one day conference held at the Library  Association London on 27th October 1971. 
Kay Henderson 
 -  Library Association; London.  1972 
 - 101p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Impurity, pollution, nuisances, offensive trades. General purification of the air. Metal and their inorganic compounds. Non-metallic elements.