Hansen. K. Benjamin F. Howell, jr.: Introduction to Geophysics. McGraw-Hill Book Comp., Inc. New York, Toronto, London 1959. 399 s., 205 fig. 16 x 24 cm. 70 sh. gt [Internet]. 1960 Jan. 1 [cited 2024 Aug. 17];59. Available from: https://tidsskrift.dk/geografisktidsskrift/article/view/46617