Very good gently handled vintage 16th printing of the Macmillan Paperbacks edition of 

WALDEN TWO

A controversial novel of morality and immorality in a scientifically-shaped Utopia

by B. F. Skinner.  Printed in 1969; published in 1962 by Macmillan. Very good condition; binding solid; covers and all pages intact and in very good condition with minimal wear.  Only faint surface wrinkling on spine from reading (not split) and one tiny surface tear at the top of the spine next to the binding edge.