Sweetser, Ralph H. (Ralph Hayes), 1871–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2342270A
- pdbooks.info ID: 47515
Ralph H. (Ralph Hayes) Sweetser Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Blast furnace practice | 1st ed. | 1938 | Author | |  | |  | | 
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| Clean coal: an argument for marked improvements in the methods of evaluating America's most important industrial fuel | 1927 | Author | | | | | | ||