Ruff, John F.
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 16768
John F. Ruff Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Text book of the ice cream mix, containing various per cents of butter fat, milk solids not fat, sugar and total solids: Divided in two parts | 1922 | Editor | |  | |  | | 
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