
Caption
Man in front of blackboard with drawing depicting blank square. Photo: Jessica Peterson
Date
2012
Credit line
Photo12/Tetra Images
Reference
TTM12A37_480
Model release
Yes
License type
Royalty free
Available size
50,0Mb (2,2Mb) / 13,9in x 13,9in / 4182 x 4182 (300dpi)