Another Dr Been presentation.
https://www.youtube.com/watch?v=Gbn0ZTlgMo0
https://www.youtube.com/watch?v=Wv-9p7SpzCM&t=1673s&pp=ygUYZHIgbW9iZWVuIHN5ZWQgYmVyYmVyaW5l
The last one is about toxicity but there is actually a lot of interesting information that has to do with things other than toxicity. More to the presentation than first meets the eye.
Edited by John Burns 5/23/2023 11:07
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