| Source: St. Louis Zoological Society Bulletin, 1947-1954 Location: Oversize / St.L. / 05 / Sa24z2 | |
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| Last Name: | Hagen |
| First Name: | Jackson |
| Middle Name: | J. |
| Volume: | 4 |
| Issue: | 4 |
| Date of Publication: | Winter 1950-51 |
| Page: | 3 |
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