Loubriel, Oscar. <br/><br/>
Supervisión  acción de grupo 
Oscar Loubriel. 
 - San Juan, Puerto Rico  Ediciones Mirador  1973. 
 - 421 p.  23 cm. 
<br/><br/>Includes bibliographies and indexes. 
<br/><br/><label>ISBN: </label>843990536X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supervision of employees<br/>School management and organization
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Puerto Rico