Johns, R V, et al. <br/><br/>
Graded and everyday examples in physics, Part2: Heat, light and sound 

 -  Macmillan Company, London  1937 
 - 308 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>530  JOH-G.2