na INLIS000000000024280 Ind 0010-1218006118 56(462) 56(462)OELs Erno Oele Sedimentological aspects of four lower-paleozoic formations in the Northern part of the province of Leon (Spain) OELE, Erno Leiden J.J. Greon Zoon 1931 98 p. : ill. ; 28 cm. 98 p. : ill. ; 28 cm. Thesis(Doctor)-Universiteit te Leiden, 1964.-- Bibl.: p. 94-98 LEON SEDIMENTATION 639/64-mfn26135