%D 1995 %O Bibliogr.: p. 41. %P 33-43 %J Plant cell biology and development %L acta47811 %T Characterization of different forms of organic matter in Upper Cretaceous levels from Cerro de La Mesa (Madrid, Spain) %V 6 %A Alvarez Ramis ConcepciĂłn %A Almendros Gonzalo %K PalinolĂłgia, Paleobotanika - harmadkor - SpanyolorszĂĄg