Roray, Nelson L.
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2407257A
- pdbooks.info ID: 126235
Nelson L. Roray Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Industrial arithmetic: an elementary text for boys in industrial, technical, vocational and trade schools, both day and evening | 1916 | Author | |  | |  | |    
| |