Mcgraw Hill Book Company <br/><br/>
Mcgraw hill encyclopedia of science and technology in 15 vols   
  

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 - New York  Mcgraw Hill Book Co  1977 
 - 719, (dac-ens) col.pls,illus,maps,28 cms 
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<br/><br/><label>Dewey Class. No.: </label>503 mcg/mcg