'Grapefruit: A Book of Instructions' hardback book by Yoko Ono, published in 1970 by Simon and Schuster. The book does not have the original dust cover.

As reads the publisher's note "Grapefruit was originally published in a limited edition of 500 copies by the Wunternaun Press in Tokyo in 1964. This new edition contains material from the original, and pieces and drawings done in subsequent years by Yoko Ono".

The book has tanned with age, and has foxing/surface marks both on the hard cover and on the pages (mostly on the outer edges, though some internal pages also have foxing marks). The spine of the book also has some wear.
See photos for further reference. 

Size is approx. 5.75"x5.5" (inches).