1932-1934 317 p., 53 figs, 11 photographs, 2 pls, 3 folded (2 col.) maps, 4to, cloth. Including: Tables belonging to Gravity Expeditions at Sea 1923-1930 (62 p.). We added two reprints by Vening Meinisz on the same subject: The Gravity Expedition of Hr. Ms. Submarine O16 in the North Atlantic, January 11 - March 16, 1937 / The Earth's crust deformation in the East Indies (1937-1940, published in: Proceedings Koninklijke Akademie van Wetenschappen. Some annotations.