![[texts]](/images/mediatype_texts.gif) | Gold, prices, and the Witwatersrand - Lehfeldt, Robert Alfred, 1868-1927
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Keywords: Gold mines and mining; Currency question; Gold; Prices; Witwatersrand
Downloads: 66 |  |
| A text-book of physics : with sections on the application of physics to physiology and medicine - Lehfeldt, Robert Alfred, 1868-1927
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Keywords: Physics
Downloads: 10 |  |
| Gold, prices, and the Witwatersrand - Lehfeldt, Robert Alfred, 1868-1927
Keywords: Gold; Currency question; Gold mines and mining -- Transvaal; Witwatersrand (South Africa)
Downloads: 121 |  |
| A list of the chief memoirs on the physics of matter - Lehfeldt, Robert Alfred, 1868-1927
Keywords: Physics
Downloads: 243 |  |
| Text-book of physics, with sections on the application of physics to physiology and medicine - Lehfeldt, Robert Alfred, 1868-1927
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Keywords: Physics
Downloads: 128 |  |
| Electro-chemistry - Lehfeldt, Robert Alfred, 1868-1927
Keywords: Electrochemistry
Downloads: 239 |  |
| Electro-chemistry : - Lehfeldt, Robert Alfred, 1868-1927
Includes bibliographical references and indexes
Keywords: Electrochemistry
Downloads: 143 |  |
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