{"product_id":"9789464460384","title":"Karel Martens Birthday Calendar","description":"\u003cdiv\u003eThe layered and multi-hued patterns in this birthday calendar – made to hang on your wall – are based on a single geometrical composition punched out of coloured cardstock in multiple directions. Originally conceived by Karel Martens in 1968, the design has remained unrealised until now.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e14 p, ills colour \u0026amp; bw, 30 x 42 cm, pb, English\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"IDEA Books NL","offers":[{"title":"Default Title","offer_id":44806531547445,"sku":"9789464461046","price":48.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/4289\/2853\/files\/NEW-WI20259956.webp?v=1779727931","url":"https:\/\/researchdevstore.myshopify.com\/products\/9789464460384","provider":"Research \u0026 Development Store","version":"1.0","type":"link"}