The Methuselah Enzyme By Stewart, Fred Mustard Books / Hardcover Books ISBN: 0877950024 / Publisher: Arbor House Pub Co, June 1970 Price Starting at $21.95 Free Shipping Send to a friend Add to Wishlist Below is a list of products arranged by condition. Select the quantity of the product you desire and click the "Add" button. Used - Very Good With Dust Jacket Very Good condition. Good dust jacket. Book Club edition. Dust jacket price clipped. In protective mylar cover. (science fiction, scifi, sci-fi, sci fi) $21.95 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store. Reviews Goodreads reviews for The Methuselah Enzyme