[PSUBS-MAILIST] Interesting Article

[Douglas Suhr via Personal_Submersibles]

Very cool article, thanks James. ~ Doug S.

On Mon, Dec 7, 2015 at 10:52 AM, James Frankland via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Just came across this.
> Regards
> James
>
> http://www.bretgilliam.com/assets/da_windowtoabyss.pdf
>
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