Sears, Francis Weston, 1898-1975. Mechanics, heat and sound. Francis Weston Sears - 2nd ed. - Cambridge, Mass. Addison-Wesley Press, Inc. c1950. - 527 p. illus. 24 cm. - Principles of physics series . Subjects--Topical Terms: Mechanics.Heat.Sound. Dewey Class. No.: Cir 531 Se1 1950