Posted by Doc Dave (in MD) [172.68.65.39] on Wednesday, January 17, 2018 at 15:21:02 :
In Reply to: Re: New question. Differentials. posted by Doc Dave (in MD) [162.158.78.133] on Wednesday, January 17, 2018 at 06:42:49 :
oops, my answer regards TC's.
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