TY  - BOOK
AU  - Pick, Milos.
AU  - Picha, Jan.
AU  - Vyskocil, Vincenc.
TI  - Theory of the earth's gravity field
SN  - 0444409394
PY  - 1973///
CY  - Amsterdam
PB  - Elsevier Scientific
KW  - Gravitational fields
KW  - Gravity
ER  -