Hassler, J. O. (Jasper Ole), 1884–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 27971
J. O. (Jasper Ole) Hassler Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Junior high school mathematics: first [-third] course | 1924 | Author | |  | |  | | 
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