海量图书期刊资源,随时随地畅享阅读乐趣
PREVENTION OF PAIN IN NATURAL CHILDBIRTHC. R. Ritsema van Eck; A. E. Ritsema van Eck · 1959
Seismic Investigations in the North Sea, 3 to 7B. J. Collette; R. A. Lagaay; A. R. Ritsema; J. A. Schouten · 1970
Seismic Investigations in the North Sea, 1 and 2B. J. Collette; R. A. Lagaay; A. R. Ritsema; J. A. Schouten · 1967
Pacific and ‘Mediterranean’ earthquake mechanismsRitsema, A. R. · Transactions, American Geophysical Union · 1957
European Seismological Commission Meeting and AbstractsRitsema, A. R. · Eos, Transactions American Geophysical Union · 1981
Focal Mechanisms of some Earthquakes of the year 1950A. R. Ritsema · 1960
Depth of the Mohorovičić-discontinuity under the North Sea BasinCOLLETTE, B. J.; LAGAAY, R. A.; RITSEMA, A. R. · 1965