Scaffold erection : intermediate 
3G E-learning. 
 - 2nd edition. 
 -  3G E-learning LLC.  2019 
 - v, 323 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-1-984635-02-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building.
<br/><br/><label>Dewey Class. No.: </label>690 S278 2019