Catalogued

Seyler coal classification chart

Made by

Clarence Arthur Seyler

Year

1900

Field

Chemistry and biochemistry

Kind

Computing chart

Room

Charts that compute — Placed by reading its description, not yet studiedCould also hang in: How a group spreads

121 other forms share this skeleton

Source

Seyler 1900, The chemical classification of coal, Proceedings of the South Wales Institute of Engineers

Attribution less certain: contested, or no single inventor recorded

Searches, not citations

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