Jansen,Bernard  <br/><br/>
Understanding sponsered search:core elements of keyword advertising 

 - New Delhi :  Cambridge Uni.Press,  2021. 
<br/><br/><label>ISBN: </label>0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication
<br/><br/><label>Dewey Class. No.: </label>659.144  / JAN