au.\*:("VILLEGAS FJ")
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DESCRIPTION OF THE LOWER CANTABRIAN STRATOTYPE NEAR TEJERINA (LEON, NW. SPAIN).WAGNER RH; VILLEGAS FJ; FONOLLA F et al.1969; 6EME.CONGR.INTERNAT.STRATIGR.GEOL.CARBONIFERE.; 1969, VOL. 1, P. 115 A 128Miscellaneous
