The increasing use of logical trees inthe civil sercives 
By W.S. Ryan et al 
 - London  Her majesty's stationary office  1970 
 - 20p 
<br/><br/><label>ISBN: </label>11 630046 9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civil liberties - Developing
<br/><br/><label>Dewey Class. No.: </label>K12x42 R959