Claassen, Peter Walter, 1886–
Nationality: Undetermined, possibly 
(United States)
Identities and Authority Control
- Open Library: OL2425064A
- pdbooks.info ID: 72407
Peter Walter Claassen Contributed to the Following:
| Title | Edition | Year of Publication | Role | Country of Publication | Possible Copyright Status | Available Online? | |||
|---|---|---|---|---|---|---|---|---|---|
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| Plecoptera nymphs of America (north of Mexico) | 1931 | Author | |  | |  | | 
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