Sigwart, Christoph,  Dr.,  1830-1904 <br/><br/>
Logic / 
by Christoph Sigwart ; translated by Helen Dendy 
 - 2nd ed., rev. and enl. 
 - London :  S. Nenschein,  1895 
 - 2 v. ;  21 cm. 
 - Library of philosophy. 4th ser .
<br/><br/>vol.1 The judgment, concept and inference. -v.2 Logical methods 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic