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The mineral resources of the world

The mineral resources of the world
Paper図書
by William van Royen, Oliver Bowles ; in collaboration with Elmer W. PehrsonPrentice-Hall, for the University of Maryland1952
Other Libraries in Japan
  • Author HeadingRoyen, William van Bowles, Oliver Pehrson, Elmer W.

Lead in 1929 : general report

Lead in 1929 : general report
Paper図書
by Elmer W. PehrsonUnited States Government Printing Office1931
Other Libraries in Japan
  • Author HeadingPehrson, Elmer W. United States. Bureau of Mine...

Summarized data of zinc production : showing the relation of production in the United States to that of the world

Summarized data of zinc production : showing the relation of production in the United States to that of the world
Paper図書
by Elmer W. Pehrson and the Common Metals DivisionUnited States Government Printing Office1929
Other Libraries in Japan
  • Author HeadingPehrson, Elmer W. United States. Bureau of Mine...

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