. Bulletin de la Société fribourgeoise des sciences naturelles : compte-rendu. Natural history; Science. BULLETIN SOCIÉTÉ FRIBOURGEOISE SCIENCES NATURELLES COMPTE-EENDU 1902-1903 VOL. XI. AVEC DEUX PORTRAITS FRIBOURG IMPRIMERIE FRAGNIÈRE FRÈRES 1903. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Société fribourgeoise des sciences naturelles. Fribourg : Imprimerie Ant. Henseler

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