Koch, Helen L. (Helen Lois), 1895–1977
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- pdbooks.info ID: 78589
Helen L. (Helen Lois) Koch Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
|  |  | 
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| A study of the nature, measurement, and determination of hand preference | 1933 | Author | |  | |  | | ||