00492nam a22001217a 4500020002300000082001300023100002800036245004400064260005400108300003500162500006100197650011200258  a9781615303007 (hb)  a534bBRI  aErik Gregersen (editor)  aThe Britannica guide to sound and light  aNew YorkbBritannica Educational Publishingc2011  axvii, 347 p.b: ill.c; 24 cm.  aIncludes glossary, bibliographical references and index.  aSound-popular worksaLight-popular worksvElectromagnetic radiationvPhysicsvAcousticsvSoundvLightvFEAS