How a group spreads

Catalogued

Flow-duration curve

Made by
US hydrologic practice; no single originator
Year
1900s
Field
Earth science and hydrology
Kind
Data display
Room
How a group spreads — Placed by reading its description, not yet studied
Skeleton drawing, not the original plate

8 other forms share this skeleton

Source

Hem, USGS Water-Supply Paper 2254

Attribution less certain: contested, or no single inventor recorded

Searches, not citations

archive.orgcommons.wikimedia.orgscholar.google.com