{"product_id":"9781603861823","title":"Principia Mathematica - Volume One","description":"An Unabridged, Digitally Enlarged Printing Of Volume I of III: Part I - MATHEMATICAL LOGIC - The Theory Of Deduction - Theory Of Apparent Variables - Classes And Relations - Logic And Relations - Products And Sums Of Classes - Part II - PROLEGOMENA TO CARDIANL ARITHMITIC - Unit Classes And Couples - Sub-Classes, Sub-Relations, And Relative Types - One-Many, Many-One, And One-One Relations - Selections - Inductive Relations","brand":"Watchmaker Publishing","offers":[{"title":"Default Title","offer_id":47062374056176,"sku":"9781603861823","price":24.97,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/9781603861823_p0.jpg?v=1763824874","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/9781603861823","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}