Investigating the earth/

Furkejuvvon:
Bibliográfalaš dieđut
Searvvušdahkki: American Geological Institute
Materiálatiipa: Girji
Giella:eaŋgalasgiella
Almmustuhtton: New York : Houghton Mifflin, c1972.
Fáttát:
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Govvádus
Fuomášahttimat:Sponsored by the American Geological Institute; supported by the National Science Foundation.
Olgguldas hápmi:xiv,594p.ill. maps.; 26cm.
Bibliografiija:Includes bibliographies.