American Decades Primary Sources cover Arts and Humanities Through the Eras cover Bowling, Beatniks, and Bell-Bottoms: Pop Culture of 20th-Century America cover Encyclopedia of Earth and Space Science cover Encyclopedia of Food and Culture cover Encyclopedia of Philosophy, ed. 2 cover Encyclopedia of the First Amendment cover Gale Encyclopedia of Everyday Law, ed. 2 cover Grzimeks Animal Life Encyclopedia, ed. 2 cover Human Diseases and Conditions, ed. 2 cover Science and Its Times cover World Eras, Vol. 1 cover World Eras, Vol. 10 cover World Eras, Vol. 2 cover World Eras, Vol. 3 cover World Eras, Vol. 4 cover World Eras, Vol. 5 cover World Eras, Vol. 6 cover World Eras, Vol. 7 cover World Eras, Vol. 8 cover World Eras, Vol. 9 cover Worldmark Encyclopedia of Cultures and Daily Life, ed. 2 cover