au.\*:("VALERIO CEG")
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LISTA PRELIMINAR ILUSTRADA DE LOS MOLUSCOS FOSILES DE LA FORMACION RIO BANANO (MIOCENO), LIMON, COSTA RICA. = LISTE PRELIMINAIRE ILLUSTREE DES MOLLUSQUES FOSSILES DE LA FORMATION RIO BANANO (MIOCENE), LIMON, COSTA RICAGOMEZ LD; VALERIO CEG.1971; INST. GEOGR. NACION. COSTA RICA, INFORME SEMESTRE; CRI; 1971, VOL. 1, P. 43 A 62Miscellaneous