TY  - JOUR
A1  - Fischer, Markus
A1  - Lienert, J.
A1  - Schneller, J.
A1  - Diemer, M.
T1  - Local extinctions of the wetland specialist Swertia perennis : a revistation study based on herbarium records
Y1  - 2002
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/16660
ER  -