1991 Photomicrography Competition
![Small World](/images/SW50-logo.png)
![](https://www.nikonsmallworld.com/images/photos/1991/_photo800/1991_08.jpg)
8th Place
Printed circuit board, glass fibers in resin matrix
Fred Espinosa
- Affiliation
- United Technologies Research Center
East Hartford, Connecticut, USA
- Technique
- Polarized Light
- Magnifaction
- 200
8th Place
Printed circuit board, glass fibers in resin matrix