Martínez, Julián F. <br/><br/>
Destrezas de pensamiento lógico 
Julián F.Martínez. 
 - Santurce, P.R.  Techne  1994. 
 - 218 p.  ill. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical<br/>Science--Methodology.