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![](./images/clear.gif) 1.- CHEMICAL FORMS OF SULFUR IN GEOLOGICAL AND ARCHEOLOGICAL ASPHALTENES FROM MIDDLE EAST, FRANCE, AND SPAIN DETERMINED BY SULFUR K- AND L-EDGE X-RAY ABSORPTION NEAR-EDGE STRUCTURE SPECTROSCOPY
PERGAMON; OXFORD; III; INTERNATIONAL, 1999
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![](./images/clear.gif) 2.- INVISIBLE GOLD; COMPARISON OF AU DEPOSITION ON PYRITE AND ARSENOPYRITE
MINERALOGICAL SOCIETY OF AMERICA; WASHINGTON, DC; USA; UNITED STATES, 1998
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