C. R. "Chuck" Downing
shared:
9/7/2017 11:43:43 PM
ReplyBook Creation: Volume 2 - A Science Guy's Exploration of @CRDowningAuthor https://t.co/BF16gCUAgU This booklet takes you thr #RGBook 3 pic.twitter.com/Njna3KprVe
— RGBookWorld (@RGBookWorld) September 8, 2017