Research Catalog

Contributions to the study of coal : A proposed simplification of the Parr unit coal formula

Title
Contributions to the study of coal : A proposed simplification of the Parr unit coal formula / by Gilbert Thiessen. Ash-to-mineral matter correction in coal analyses, by Gilbert Thiessen. Unit coal as a basis of coal standardization as applied to Illinois coals, by G. H. Cady and O. W. Rees. Studies of the graphical method of calculating pure coal calorific value, by Gilbert Thiessen and Frank H. Reed.
Author
Illinois State Geological Survey.
Publication
Urbana, Illinois : Printed by authority of the state of Illinois, 1934.

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Additional Authors
  • Thiessen, Gilbert, 1905-
  • Cady, Gilbert H. (Gilbert Haven), 1882-1970.
  • Rees, Orin Wainwright, 1898-
  • Reed, Frank Hynes, 1890-
Description
99 pages : illustrations.
Series Statement
Its Report of investigations ; no. 32
Uniform Title
Report of investigations (Illinois State Geological Survey) ; no. 32.
Subjects
Note
  • At head of title: State of Illinois. Department of Registration and Education. Division of the State Geological Survey.
LCCN
gs 35000001
OCLC
  • ocm05045725
  • SCSB-3948133
Owning Institutions
Columbia University Libraries