Richards, Steve. frey50 Levitation : what it is, how it works, how to do it / Steve Richards. - Wellingborough, Northamptonshire : Aquarian Press, 1980. - 160 p. : ill. ; 22 cm. Includes bibliographical references and index. ISBN: 0850302358 (pbk.) LCCN: 82114977 Subjects--Topical Terms: Levitation. LC Class. No.: BF1385 / .R53 1980 Dewey Class. No.: 133.9/2