Gagen, Terrence,  <br/><br/>
et al. 
Terrence Gagen  
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 - North-Holland Publishing Co., Amsterdam  1973 
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 - .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Groups-- Algebra-- Mathematics
<br/><br/><label>Dewey Class. No.: </label>512.2  GAG-F