3G handy guide :  travel agency management / 
3G E-Learning. 
 - New York ;  3G E-Learning :  2019. 
 - vii, 228 pages :  illustrations (colored) ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781984624123 
<br/><br/><label>Dewey Class. No.: </label>Grad. 658.9191   / T531