

6th Place, 1980
Steven B. Warner
Celanese Research Company
Summit, New Jersey, USA
Thick cross-section of polymer pen tip (Green color is pen ink) (20x)
Polarized light - Learn more


Steven B. Warner
Celanese Research Company
Summit, New Jersey, USA
Thick cross-section of polymer pen tip (Green color is pen ink) (20x)
Polarized light - Learn more