00402nam a2200157Ia 450000500170000000800410001724500600005826000280011830000180014602000180016454600150018250500120019733600090020933700150021833800110023320260803094242.0251212s1992    xx            000 0 und d1 aSound, Heat & Light: bEnergy At Work /cMelvin Berger.  a :bScholastic,cc1992.  a: bcol. ill.  a9780590461030  ain English  aLex 490  atext  aunmediated  avolume