{"product_id":"principia-mathematica-volume-one","title":"Principia Mathematica - Volume One","description":"\u003cp\u003eAn Unabridged, Unaltered 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 CARDINAL ARITHMETIC - Unit Classes And Couples - Sub-Classes, Sub-Relations, And Relative Types - One-Many, Many-One, And One-One Relations - Selections - Inductive Relations\u003c\/p\u003e","brand":"Merchant Books","offers":[{"title":"Default Title","offer_id":45787391492143,"sku":"9781603861823","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0770\/2855\/6847\/files\/imageloader_c49212dd-d734-47e0-bbaf-c6c6ac0010e9.jpg?v=1786148354","url":"https:\/\/tssbooks.com\/products\/principia-mathematica-volume-one","provider":"tssbooks","version":"1.0","type":"link"}