Technology, employment, and output per man in phosphate-rock mining, 1880-1937

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Bibliographic Information

Title
"Technology, employment, and output per man in phosphate-rock mining, 1880-1937"
Statement of Responsibility
by A. Porter Haskell, Jr. and O.E. Kiessling
Publisher
  • Works Progress Administration, National Research Project
Publication Year
  • 1938
Book size
26 cm

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Notes

Includes bibliographical references

"In cooperation with Department of the Interior, Bureau of Mines"

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