000			003310000a22001330004500
001			EST
003			526 / H19
004			M
006			m
100			_aHayford, John F.
245			_aSupplementary investigation in 1909 of the figure of the earth and isostasy
650			_a<GEODESIA><FORMA DE LA TIERRA><ISOSTASIA>
999			_c9956 _d9956