Artenschutzprogramm für die Gekielte Smaragdlibelle (Oxygastra curtisii, Insecta, Odonata) in Deutschland das Beispeiel der Population an der Our (Pensoft, 2007)
"The River Our ... forms the border between Germany and Luxembourg"--P. [4] of cover
Paralleltitel: Species protection programme for the orange-spotted emerald (Oxygastra curtisii, Insecta, Odonata) in Germany
Includes bibliographical references (p. 89-102)