Our mineral world
Our mineral world [motion picture].
- Haymarket, Va. : Educational Media International, 1978.
- 1 film reel (28 min.) : sd., col. ; 16 mm.
Cataloging information taken from container.
Topics included are : where minerals are found, modern techniques of exploration, how minerals formed in the earth, interdependence of mining and using countries, conserving our diminishing mineral resources.
Mines and mineral resources.
Cataloging information taken from container.
Topics included are : where minerals are found, modern techniques of exploration, how minerals formed in the earth, interdependence of mining and using countries, conserving our diminishing mineral resources.
Mines and mineral resources.