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by Klein, John P.; Van Houwelingen, Hans C.; Ibrahim, Joseph G.; et al.
by Klein, Thomas; Solms, Hans-joachim; Wegera, Klaus-peter
by Klein, Hans; Nicklas, Tobias
by klein, Hans Peter
by Paul, Hermann; Klein, Thomas; Solms, Hans-joachim; et al.
by Wolkenstein, Oswald Von; Klein, Karl Kurt; Moser, Hans (ADP); et al.
by Burger, Rudolf; Klein, Hans D.; Schrader, Wolfgang H.
by Dörge, Karl; Klein, Hans
by Hans Peter Latscha; Uli Kazmaier; Helmut Klein