EDITORIALS
Scholars without Borders http://www.opusej.org/2012/07/12/editorial-scholars-without-boarders/
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FEATURE ARTICLES
Leonardo’s Landscapes as Maps, Donato Pezzutto http://www.opusej.org/library/leonardos-landscapes-as-maps-cover-page/
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DISCUSSION PAPERS
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FORUM
Leonardo’s Landscapes as Maps, Donato Pezzutto http://www.opusej.org/2012/10/24/leonardos-landscapes-as-maps-cover-page/
Leonardo’s Val di Chiana map in the Mona Lisa, Donato Pezzutto http://www.opusej.org/2012/10/24/leonardos-val-di-chiana-map-in-the-mona-lisa/
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READING LIST
The position of the equator of the Late Ordovician period, 450 million years ago, deduced from paleomagnetic data from Laurentia, thus providing both a high-precision equatorial location and an independent test of the geocentric axial dipole hypothesis for that time. Jisuo Jin, J et al, 2012, “Precisely locating the Ordovician equator in Laurentia”, Geology online November 6, 2012, doi: 10.1130/G33688.1. http://geology.gsapubs.org/content/early/2012/11/06/G33688.1.abstract#aff-1.