Positive Feedback: A General Systems Approach to Positive/Negative Feedback and Mutual Causality

Oxford: Pergamon Press, 1968. x, 169 pp. 22.5 x 14.5 cm. Dark teal paper covered boards with gilt lettering to spine in a field of brown, in an illustrated dustjacket printed in maroon and green with white and yellow lettering. Sunning, bumping, rubbing, and wear to spine of jacket, with a 2 cm closed tear to head that previous owner has repaired with transparent tape on verso of jacket. Rubbing to panels of jacket, with rubbing, bumping, and some creasing to extremties. Jacket is now protected in a mylar cover. Light rubbing and bumping to spine ends of book, with some sunning to head of spine and top edges of boards. Previous owner's name stamp at head of front free endpaper. Interior is otherwise clean and unmarked. Binding firm. . Hard Cover. Very Good/Good.