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![](./images/clear.gif) 1.- A TRANSMISSION ELECTRON MICROSCOPE COMPARISON OF MODERN BOTRYOCOCCUS BRAUNII WITH SOME MICROFOSSILS PREVIOUSLY REFERED TO THAT SPECIES;
1982
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![](./images/clear.gif) 2.- COMPARATIVE PETROGRAPHIC AND GEOCHEMICAL STUDY OF THE PUERTOLLANO OIL SHALE KEROGENS
PERGAMON; OXFORD-NEW YORK; III; INTERNATIONAL, 1996
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