Von der Freiheit
Bernard Bolzano's Schriften, GDML_Books, (1932), p. 33-34 / Harvested from
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@inbook{400099,
     title = {Von der Freiheit},
     booktitle = {Bernard Bolzano's Schriften},
     series = {GDML\_Books},
     publisher = {Kr\'alovsk\'a \v cesk\'a spole\v cnost nauk v Praze},
     address = {Praha},
     year = {1932},
     pages = {33-34},
     url = {http://dml.mathdoc.fr/item/400099}
}

 (éd.). Von der Freiheit, dans Bernard Bolzano's Schriften, GDML_Books,  (1932), pp. 33-34. http://gdmltest.u-ga.fr/item/400099/