Physics ; Chemistry ; Astronomy ; Sciences of the Earth
Awduron Eraill: | |
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Fformat: | Llyfr |
Iaith: | German |
Cyhoeddwyd: |
Boston ; New York :
Houghton, Mifflin and Co.,
1906
|
Cyfres: | Congress of Arts and Science / ed. by Howard J. Rogers
Vol. 4 |
Disgrifiad Corfforoll: | 761 S. |
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Rhif Galw: | PH 8 */Con-04 |