Trudy Imperatorskago S.-Peterburgskago botanicheskago sada.Acta Horti Petropolitani
S.-Peterburg, Imperatorskiǐ S.-Peterburgskiǐ botanicheskiǐ sad,
1903-1904
Missouri Botanical Garden
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Public domain. The BHL considers that this work is no longer under copyright protection.