{"version":"1.0","provider_name":"Librer\u00eda Gisbert","provider_url":"https:\/\/libreriagisbert.com\/ebooks","author_name":"libreria-gisbert-v2a","author_url":"https:\/\/libreriagisbert.com\/ebooks\/author\/libreria-gisbert-v2a\/","title":"Cr\u00f3nicas matem\u00e1ticas - Librer\u00eda Gisbert","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"M06zELbxfv\"><a href=\"https:\/\/libreriagisbert.com\/ebooks\/libro\/cronicas-matematicas\/\">Cr\u00f3nicas matem\u00e1ticas<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/libreriagisbert.com\/ebooks\/libro\/cronicas-matematicas\/embed\/#?secret=M06zELbxfv\" width=\"600\" height=\"338\" title=\"\u00abCr\u00f3nicas matem\u00e1ticas\u00bb \u2014 Librer\u00eda Gisbert\" data-secret=\"M06zELbxfv\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","description":"\u00bfQu\u00e9 son las matem\u00e1ticas? \u00bfPara qu\u00e9 sirven? \u00bfPor qu\u00e9 es importante conocer su historia? Estas son algunas de las preguntas a las que da respuesta esta obra que nos narra de forma concisa la historia de esta ciencia desde la Prehistoria hasta nuestros d\u00edas. Pero esta narraci\u00f3n no es solamente una superposici\u00f3n de personajes hist\u00f3ricos [&hellip;]"}