TY  - BOOK
AU  - Pick, Milos  
AU  - Picha, Jan  Vyskocil, Vincenc 
TI  - Theory of the earth's gravity field
SN  - 444409394
PY  - 1973///
CY  - Amsterdam
PB  - Elsevier Scientific Publication
KW  - Earth Gravity FieldGravity Field
ER  -