Text ( visual ) : unmediated The pulse of the earth / by J. H. F. Umbgrove. -- 2nd ed.. -- The Hague : M. Nijhoff , 1947. -- xxii, 358 p. : 7 plates of maps, 3 folded tables, ill. ; 25 cm. -- (BA13933390) ; https://ci.nii.ac.jp/ncid/BA13933390 Author Heading(s): Umbgrove, Johannes Herman Frederik