Lawden, Derek F. Elements of relativity theory / D.F. Lawden. - Chichester ; New York : Wiley, c1985. - x, 108 p. : ill. ; 20 cm. Includes index. ISBN: 0471908525 LCCN: 85012291 Subjects--Topical Terms: Relativity (Physics) LC Class. No.: QC173.55 / .L37 1985 Dewey Class. No.: 530.1/1