McGraw-Hill Encyclopedia of Science & Technology. 20 vols. New York: McGraw?Hill Book Company, 1987. Multivolume use

The New Book of Knowledge. Deluxe Library Edition ed. 21 vols. Danbury: Grolier Incorporated, 1997. Multivolume use

Taylor, Charles, Professor, ed. The Kingfisher Science Encyclopedia. 1 vols. New York: Kingfisher Publications, 2000.