Richard Dixon Oldham

Richard Dixon Oldham Richard Dixon Oldham FRS (; 31 July 1858 – 15 July 1936) was a British geologist who made the first clear identification of the separate arrivals of P-waves, S-waves and surface waves on seismograms and the first clear evidence that the Earth has a central core. Provided by Wikipedia
6
Published 1893
Other Authors: '; ...Oldham, Richard Dixon....
Book
7
by Oldham, Richard Dixon
Published 1897
Book