Cruz Tobar, Luis Ambrosio <br/><br/>
Lógica / Luis Ambrosio Cruz Tobar ; Fernando Barredo Heinert 

 - Quito, Ecuador   Fray Jodoco Ricke, 1971  1971 
 - 76 p.     22 cm.*il. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LOGICA
<br/><br/><label>Dewey Class. No.: </label>160/C889l