Author: Storch, P., & Serpagli, E., 1993.:
Title: Lower Silurian graptolites from Southwestern Sardinia.
Description: Boll. Soc. Paleont. .Ital., 32(1): pp. 3-57, several photos on 10 plates, several drawings in 16 figs., refs. 4to. Plain new wrappers.

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