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Lodestone Compass: Chinese or Olmec Primacy?

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Science  05 Sep 1975:
Vol. 189, Issue 4205, pp. 753-760
DOI: 10.1126/science.189.4205.753

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vol. 189 no. 4205 753-760

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  1. John B. Carlson1
  1. 1Department of Physics and Astronomy, University of Maryland, College Park 20742

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