Danubius Pannonico-mysicus : observationibus geographicis, astronomicis, hydrographicis, historicis, physicis, perlustratus et in sex tomos digestus. T. 3, [De mineralibis circa Danubium effossis : necnon aqua abrasis, & in eum deductis] - Дигитална универзитетска библиотека - страна 0001 - величина 1

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http://resolve.ubsm.bg.ac.rs/URL/1855/

http://resolve.ubsm.bg.ac.rs/URL/1855/

Danubius Pannonico-mysicus : observationibus geographicis, astronomicis, hydrographicis, historicis, physicis, perlustratus et in sex tomos digestus. T. 3, [De mineralibis circa Danubium effossis : necnon aqua abrasis, & in eum deductis]