Roby, J. J. (James J.), 1865–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 138507
J. J. (James J.) Roby Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| A treatise on cost accounting as applied to coal mining | 1913 | Author | |  | |  | |    
| |