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by Maier, Klaus A.; Rohde, Horst; Stegemann, Bernd; et al.
by Ter Horst, Gert J., Ph.D.; Zipes, Douglas P., M.D.
by Richter, Horst P., P. D.
by van der Horst, Frank C. P.; Kagan, Jerome
by Alfred Bekker; Pete Hackett; W. K. Giesa; et al.
by Jasper P. Morgan; Alfred Bekker; Uwe Erichsen; et al.
by Horst, Horst P.
by Pöttker, Horst; Lofink, Juliana
by Kremer, Bruno P.; Bannwarth, Horst