Rational use of water and its treatment in the chemical industry 

 - New  York United Nations USA      1991 
 - "x, 146p."  cm. 
<br/><br/><label>Standard No.: </label>84657 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electrical
<br/><br/><label>Dewey Class. No.: </label>"X9(E):(D2), N1/UN"