Marijuana Potency By Starks, Michael Books / Paperback Books › Technology & Engineering › General ISBN: 0915904276 / Publisher: And/Or Press, July 1977 Price Starting at $19.65 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. Collectible - Acceptable First Edition First edition copy. Collectible - Acceptable. Spine is cracked. $19.65 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 Marijuana Potency