PARLIAMENTARY OFFICE OF SCIENCE AND TECHNOLOGY 

 - LONDON  1993 
<br/><br/><label>ISBN: </label>1 897941 20 X 
<br/><br/><label>LC Class. No.: </label>333.91/PRA  / 1 
<br/><br/><label>Dewey Class. No.: </label>333.91/PRA  / 1