Morse, Philip McCord 1903 Vibration and sound - 2a. ed. - New York : McGraw-Hill, 1948. - xix, 468 p. : gráfs., tablas ; 26 cm. - International ser. in pure and applied physics . Glosario, p. 435-437 Bibliografía, p. 433 Subjects--Topical Terms: VIBRACION Universal Decimal Class. No.: 534