Author
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Rouse, Parke, 1915-
1
Rupp, I. Daniel 1803-1878
4
Sachse, Julius Friedrich, 1842-1919
2
Schantz, F.J.F.
1
Sheppard, Walter Lee, 1911-
1
Smith, Clifford Neal
1
Societatea Banateana-Vasile Alecsandri
1
Strassburger, Ralph Beaver, 1883-1959
6
United States. National Resources Committee. Science Committee
1
Wecken, Ernst
1
Welcome Society of Pennsylvania
1
Wilson, Edwin Bidwell, 1879-1964
1
Wokeck, Marianne Sophia, 1947-
1
Wyoming Historical and Geological Society
1
Yoder, Don
1
Yoder, Donald Herbert
1