Gray Clifford F  <br/><br/>
Project Management : The Managerial Process 

 - 6th ed. 
 - New York  Mc Graw Hill  2020 
 - 917p 
<br/><br/><label>ISBN: </label>9789339212032 
<br/><br/><label>Dewey Class. No.: </label>658.404 GRA/P