Author: Aalto, M., et al., 1989.:
Title: An Interglacial beaver dam deposit at Vimpeli, Ostrobothnia, Finland. [Bull. Geol. Surv. Finland, 348.]
Description: Espoo. 8vo. Pp. 34, 4 photos on 2 pls., 1 fold. section, 18 photos and figs. in text, refs. Orig. stiff wrs.

Keywords: