Davidoff, Philip G. <br/><br/>
Worldwide tours :  a travel agent's guide to selling tours / 
Philip G. Davidoff, Doris S. Davidoff. 
 - Englewood Cliffs, N.J. :  Prentice Hall,  c1990. 
 - vii, 82 p. :  ill., maps ;  28 cm. 
<br/><br/> "A National Publishers book." 
<br/><br/><label>ISBN: </label>9780139648915  $11.25 
<br/><br/><label>LCCN: </label>89071155  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Package tours.
<br/><br/><label>LC Class. No.: </label>G155.A1  / D353 1990 
<br/><br/><label>Dewey Class. No.: </label>338.4/79102373 DAV