Study on the existing and potential national parks in the Federal Republic of Germany with regard to the international national park concept
Henke, H, Olschowy, G, Erz, W, Pretscher, P. (Bunderforschungsanstalt fuer Naturschutz und Landschaftsoekologie, Bonn-Bad Godesberg (Germany, F.R.))
Published in Schriftenreihe fuer Landschaftpflege und Naturschutz (Germany, F.R.) (1976)
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Published in Schriftenreihe fuer Landschaftpflege und Naturschutz (Germany, F.R.) (1976)
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Fetal sex determination by high resolution ultrasound in early pregnancy
Mielke, Gunther, Kiesel, Ludwig, Backsch, Claudia, Erz, Winfried, Gonser, Markus
Published in European journal of ultrasound (01.04.1998)
Published in European journal of ultrasound (01.04.1998)
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