Porteous A <br/><br/>
recycling resources refuse 
Porteous A 
 - London  Longman UK           1977 
 - 119p.` Bibliography chapterwise  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>X 9 (E:898).3.N7, L7