Ladd, William J. (William John), 1842–1914
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 129126
William J. (William John) Ladd Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Ladd's discount book: Number three. More than three hundred thousand absolutely correct computations | 1915 | Editor | |  | | | | ||