Evolution of some Cretaceous ferns in European palefloristic province

by Voronova, Margita A.
Source: 1. Paleofloristic and Paleoclimatic Changes During Cretaceous and Tertiary 1. Bratislava : Geologický ústav Dionýza Štúra, 1993 1. 80-85314-26-6 1. S. 11-16