Sellars, Roy Wood,  4  0  1880-1973. <br/><br/>
The essentials of logic /        6 
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by R. W. Sellars ... 
 - Rev. Edition.   
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 - x, 369 pages. :  illus., diagrs.   19 cm.     
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<br/><br/>References at end of each chapter; Bibliography: p. [363]-364. 
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