Ridgway, Robert, 1850–1929
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL18088A
- pdbooks.info ID: 136892
Robert Ridgway Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Color standards and color nomenclature | 1912 | Author | |  | | | |    
| |