1993 Photomicrography Competition
![Small World](/images/SW50-logo.png)
![](https://www.nikonsmallworld.com/images/photos/1993/_photo800/1993HM_09.jpg)
Honorable Mention
Copper sulphate and bromothymol blue
Wolfgang Bock
- Affiliation
- Occupational Institute for Safety and Health
Sankt Augustin, Germany
- Technique
- Polarized Light
- Magnifaction
- 180
Honorable Mention
Copper sulphate and bromothymol blue