Heller, Martín E. <br/><br/>
La venta profesional 
Martín E. Heller. 
 - Buenos Aires  Ediciones Macchi  c1993. 
 - 141 p.  23 cm. 
<br/><br/><label>ISBN: </label>9505372191 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing<br/>Selling<br/>Sales promotion
<br/><br/><label>LC Class. No.: </label>HF5415  / .H455 1993