Boards show only light wear, a clean, solid and unmarked copy in very good condition. See photos.The Treatise On The Elucidation Of The KnowableSKU: 285993385733 $20.00 Regular Price$18.00Sale PriceQuantity*Add to CartBuy NowAuthorRobert F. RhodesPublication Date2006ISBNConditionLike NewPublisherBdk America