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![](./images/clear.gif) 1.- A COMPARATIVE STUDY OF FOSSIL AND EXTANT ALGAENANS USING RUTHENIUM TETROXIDE DEGRADATION
PERGAMON; OXFORD; III; INTERNATIONAL, 2000
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![](./images/clear.gif) 2.- FREE AND SULPHURIZED HOPANOIDS AND HIGHLY BRANCHED ISOPRENOIDS IN IMMATURE LACUSTRINE OIL SHALES
PERGAMON; OXFORD-NEW YORK; III; INTERNATIONAL, 1997
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