Steve Gregory <br/><br/>
Parallel logic Programming in PARLOG:the language and its implementation 

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 -  Addison-Wesley Publishing  1987 
 - 217 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-201-19241-1 
<br/><br/><label>Dewey Class. No.: </label>004.891