Bailey, Cecil Henry. The electromagnetic spectrum and sound : 50 modern experiments / by C. H. Bailey. - [1st ed.] - Pergamon Press, [1967]. - ix, 135 p. : ill. ; 20 cm. - The Commonwealth and international library. Physics division . Includes index. Bibliography: p. 129. LCCN: 66028412 Subjects--Topical Terms: Electromagnetic theory.Sound-waves. Subjects--Index Terms: ფიზიკა ელექტრომაგნიტური თეორია ბგერითი ტალღები LC Class. No.: QC670 / .B25 1967 Dewey Class. No.: 530 Universal Decimal Class. No.: 534.3