Science Year 1993: The World Book Annual Science Supplement. Chicago etc.: World Book, Inc., 1992 400 p. ill. 0-7166-1193-7.
Science Year 1993: The World Book Annual Science Supplement. Chicago etc.: World Book, Inc., 1992 400 p. ill. 0-7166-1193-7.
(1992) Science Year 1993: The World Book Annual Science Supplement, Chicago etc.: World Book, Inc. 400 p. ill. 0-7166-1193-7.
(1992). Science Year 1993: The World Book Annual Science Supplement. A review of Science and Technology During the 1992 SchoolYea. Chicago etc.: World Book, Inc., 400 p. ill.
Science Year 1993: The World Book Annual Science Supplement: A review of Science and Technology During the 1992 SchoolYea. Chicago etc.: World Book, Inc.; 1992. p. 400 p. ill. ISBN: 0-7166-1193-7.
