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The first three Polar Years - A general overview
Bulkeley, R. (2010). The first three Polar Years - A general overview, in: Barr, S. et al. The history of the International Polar Years (IPYs). From Pole to Pole, : pp. 1-6. http://dx.doi.org/10.1007/978-3-642-12402-0_1
In: Barr, S.; Lüdecke, C. (Ed.) (2010). The history of the International Polar Years (IPYs). From Pole to Pole. Springer: Berlin. ISBN 978-3-642-12402-0. xi, 319 pp. http://dx.doi.org/10.1007/978-3-642-12402-0, more
In: From Pole to Pole. Springer: Heidelberg; Berlin. ISSN 2193-7338; e-ISSN 2193-7346, more
Peer reviewed article  
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Keyword
    Marine/Coastal
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  • Bulkeley, R.
Abstract
    The first general physical property of the earth that our ancestors began to understand, in the third century bc, was its roughly spherical shape. The second, about 1,800 years later, was its magnetic field. In both cases the scientists were able to construct small models of the phenomenon, and to measure and map local portions of it. By the eighteenth century ad both the surface of the earth and its magnetic properties were being mapped in some detail.
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