Journal of Comparative and Physiological Psychology 1966-73 Vol 61-83 - $275 (Bellevue)

I couldn't find too much on this publication and almost no hardcovers. None like this . I think this is an exceedingly rare set ! These were part of the Neurological Surgery Dept at the University of Washington. Books are in very good shape. Look to be barely used. About 50% have the same spot on the left side of the cover page. Not sure what it is from or why it would be consistent . (See pictures) There are 24 total books. BF