Garey, Michael R. and Johnson, David S. <br/><br/>
Computers and intractability; a guide to the theory of NP-Completeness   

 - San Francisco  W. H. Freeman  1979 
 - x, 338p. Index 
 - Mathematical Sciences   a series of books in the- .
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<br/><br/><label>Dewey Class. No.: </label>518.1  / G229.CI