Abacus, the past of medicine. Doc Rat golden oldie DR1427 #DocRat #medicine #computers First published 20111213

Originally tweeted by Jenner (@DocRatComic) on 09/06/2020.
Posted by a Furry for Furries
Abacus, the past of medicine. Doc Rat golden oldie DR1427 #DocRat #medicine #computers First published 20111213
Originally tweeted by Jenner (@DocRatComic) on 09/06/2020.