526.709166 Wor P Worzel, John Lamar, 1919 Pedulum gravity meansurements at sea, 1936 - 1959 New York, J Wiley [cl 965] xx, 422 p. ilus., mapas (algs. plegs., algs. color en bolsillo) planos, perfiles 31 cm. (Lamont Geological Observatory contribution #807) Bibliografía: p. 285 - 289.