Helseth, Inga Olla, 1888–1987
Nationality: 
(United States)
Identities and Authority Control
- Open Library: OL2160312A
- SSN: 263680339
- pdbooks.info ID: 40504
Inga Olla Helseth Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| Children's thinking | 1926 | Author | |  | |  | | 
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