The automorphism group of torsionfree abelian groups of rank two [microform].
| Váldodahkki: | |
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| Materiálatiipa: | Visual Material |
| Giella: | eaŋgalasgiella |
| Almmustuhtton: |
Quezon City
Photoduplication Service, University of the Philippines Library
1977.
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| Fáttát: |