Don Schaeffer
BIOFILM AFTER 3 OR 4 WEEKS
(finding my way back on line)
https://youtu.be/X0w69C5Ha4Q
https://youtu.be/SA-mIcF9vHc
Biofilm after 3 or 4 weeks
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- Posts: 3359
- Joined: Sun Mar 22, 2020 10:06 am
- Location: Winnipeg, Manitoba, Canada