The Earth's core
by S. K. Runcorn, K. M. Creer, Jacobs, J. A.
PaleomagnetismCoreGeomagnetismCongressesEarth (planet)
Writing a summary for young readers…
For young readers
Book data: Open Library
by S. K. Runcorn, K. M. Creer, Jacobs, J. A.
Book data: Open Library