here are some more pages I scanned from various books... each image is credited with it's original caption and bibliography
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| The Ocean Yields It's Treasures, The Wonderland of Science, J.C Sanford, Australia, 1945 |
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| Heller Brothers Company Catalogue, circa 1910, Newark, N.J, U.S.A |
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| Heller Brothers Company Catalogue, circa 1910, Newark, N.J, U.S.A |
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| Heller Brothers Company Catalogue, circa 1910, Newark, N.J, U.S.A |
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Out of the Test Tube . . . Petroleum possibilities are even yet only suspected,
The Wonderland of Science, J.C Sanford, Australia, 1945 |
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| Deficiency symptoms in Sugar Beet , The Wonderland of Science, J.C Sanford,Australia, 1945 |
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