Britannica Guide to the Ideas That Made the Modern World: The People, Philosophy and History of the Enlightenment by Encyclopedia Britannica English | April 8, 2008 | ISBN: 0762433701 | 288 pages | PDF | 2.14 Mb
Religions Around the World: Investigate the Beliefs and Faiths of People Everywhere (Britannica Learning Library) by Encyclopedia Britannica English | August 22, 2003 | ISBN: 1593390076 | 66 pages | PDF | 42 Mb
Kenneth Pletcher, "The Britannica Guide to Explorers and Explorations That Changed the Modern World" English | ISBN: 1615300287 | 2009 | PDF | 351 pages | 13 MB