Gregus, Martin Jr. <br/><br/>
Proof :  the bears of summer / 
Martin Gregus, Jr. 
 - Washington ;  National Geographic Partners, LLC.,   September 2022.	 
 - volume 241, pages 8-18,   illustration. 
<br/><br/> National Geographic, v. 242, n. 3, pages 8-18, September 2022.