Author: Hartz, N., & Østrup, E., 1899.:
Title: Danske Diatoméjord-Aflejringer og deres Diatoméer. [Danmarks Geol. Unders., II. R., 9.]
Description: Copenhagen. Large 8vo. Pp. 81,[3], 2 pates (incl. 20 figs.), refs. Half cloth, orig. printed wrappers mounted. - With short French summary.

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