Author: Burckhardt, C., 1910.:
Title: Estudio geologico de la region de San Pedro del Gallo, Durango. [Parerg. Inst. Geol. México, vol. 3 nr. 6.]
Description: [México.] 8vo, 22.5cm. Pp. iv,307-357, 1 folding coloured geological map, 1 fold. table, 2 photogr. views with explanatory transparent overlay, 9 figs. in text. Plain new wrappers.

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