{"product_id":"9780344090622","title":"A History of the Progress of Calculus of Variations During the Nineteenth Century","description":"A History of the Progress of Calculus of Variations During the Nineteenth Century - Todhunter, Isaac","brand":"INGRAM","offers":[{"title":"Paperback","offer_id":43488964378855,"sku":"9780344090622","price":36.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0614\/6942\/5895\/products\/9780344090622.jpg?v=1653531963","url":"https:\/\/shop.tertulia.com\/products\/9780344090622","provider":"Tertulia","version":"1.0","type":"link"}