Magnet earth
Magnet earth [videorecording]
- London : BBC Enterprises, 1980
- 1 videocassette (U-matic) (50 min.) : sd., col. ; 3/4 in.
- Horizon [videorecording] .
A report on the progress of research into the earth's magnetic field
Earth--Magnetism
Magnetism, Terrestrial
A report on the progress of research into the earth's magnetic field
Earth--Magnetism
Magnetism, Terrestrial
