TY  - BOOK
AU  - Campbell,Wallace H.
TI  - Earth magnetism: a guided tour through magnetic fields 
T2  - Complementary science series
SN  - 0-12-158164-0 (rustica : papel alcalino)
AV  - QC815.2 C34
U1  - 538/.7 21
PY  - 2001///
CY  - San Diego
PB  - Harcourt/Academic Press
KW  - Geomagnetismo
ER  -