Naturalientausch, &c
Place of publication: Prag
Language: ger
Notes: The first four pages of the work are supplied from the author's 'Böheims phänerogamische und cryptogamische Gewächse', pp. 163-166; the next eight leaves are unpaged, and the regular numeration begins at p. 21.

No. 12 was also published under the title 'Beiträge zur Naturgeschichte' and in this set consists of a photostat copy of pp. 547-610 and a xerox copy of pp. 643-658.