Master Plant Teachers: Entheogens Facilitate Mystical Experiences By Clark, Nancy Books / Hardcover Nature › Plants ISBN: 0960118756 / Publisher: Dr. Nancy Clark, Ph.D. Publishing, May 2023 Price $79.98 Free Shipping Send to a friend Collectible - Very Good First Edition Signed Signed Copy First edition copy. Collectible - Very Good. Inscribed by author on title page. $79.98 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.