The Koster Site: The Paleoenvironment as Interpreted From Snails By Manfred Jaehning Books / Paperback Social Science › Archaeology Publisher: Northwestern Archeological Program, January 1971 Price $41.75 Free Shipping Send to a friend Used - Very Good Very Good condition. (archaeology, archeology, science, snails, molusks) $41.75 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.