Froebes, Joseph <br/><br/>
Tractatus logicae formalis 

 - Romae :  Universitas Gregoriana,  1940 
 - xvi, 417p.;  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manual<br/>Lógica
<br/><br/><label>Universal Decimal Class. No.: </label>161/162  (022)