000 003430000a22001450004500
008 140223b1958 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aH4 J8
082 _aH4 J8
100 _aHeiskanen (W A)
700 _aMeinesz (F A V)
245 _aEarth and its gravity field
260 _c1958
650 _aDyanmic Geology
999 _c156671
_d156671