TY  - BOOK
AU  - Heiskanen, Weikko Aleksanteri,
AU  - Vening, Meinesz Felix Andries,
TI  - The earth  and its gravity field
U1  - 538.7 
PY  - 1958///
CY  - New York
PB  - McGraw-Hill
KW  - Magnetism, Terrestrial
KW  - Earth
N1  - Includes bibliographies
ER  -