TY  - BOOK
AU  - Heacock, John G.,
TI  - The structure and physical properties of the earth's cross
T2  - Geophysical monograph
AV  - QE511 H43
PY  - 1971///
CY  - Washington
PB  - American geophysical union
KW  - Ondas sísmicas
KW  - Tierra (Planeta)
KW  - Corteza
ER  -