STEWARD,R, WALLACE <br/><br/>
A TEXT-B00K OF LIGHT 
R, WALLACE STEWART 
 - LONDON  UNIVERSITY CUTORIAF PRESS  1913 
 - 346 
<br/><br/> PL means Physics Light, Heat and Sound Page No. 465-469 in A-Z Accession Register (Accession No. PL1-PL131) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics Light, Heat and Sound
<br/><br/><label>Dewey Class. No.: </label>Pl22