{"product_id":"a-history-of-the-progress-of-the-calculus-of-variations-during-the-nineteenth-century-9781313263153","title":"A History of the Progress of the Calculus of Variations During the Nineteenth Century","description":"\u003cp\u003eTodhunter, I. (Isaac), 1820-1884\u003c\/p\u003e","brand":"HardPress","offers":[{"title":"Default Title","offer_id":54347221991759,"sku":"9781313263153","price":22.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/hardpress.net\/products\/a-history-of-the-progress-of-the-calculus-of-variations-during-the-nineteenth-century-9781313263153","provider":"HardPress","version":"1.0","type":"link"}