Creates resources, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means, means - Ginsburg R N Ed.; NATO advanced research workshop on creataceous resources (1988 : Digne); Beaudoin Bernard Ed. (Dordrecht Kluwer Academic Publisher, 1990)
Keywords: Stratigraphy