Catalogued

Phenological isochrone map

Made by

Andrew Delmar Hopkins

Year

1918

Field

Meteorology and climate

Kind

Map

Room

Places — Placed by reading its description, not yet studied

20 other forms share this skeleton

Source

Hopkins 1918, Periodical events and natural law as guides to agricultural research and practice, USDA Monthly Weather Review Supplement 9

Attribution checked against the source

Searches, not citations

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