Produced as a joint project of National Science Teachers Association and National Aeronautics and Space Administration.
| Searvvušdahkkit: | , |
|---|---|
| Materiálatiipa: | Girji |
| Giella: | eaŋgalasgiella |
| Almmustuhtton: |
Darien, Conn.
Teachers Pub.
[c1964].
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| Fáttát: |