41
by Toth, Julius
Published 1911
Book
42
by Berg, Georg
Published 1923
Book
43
by Dahmer, Georg
Published 1934
Book
44
by Hesemann, J.
Published 1936
Book
45
Book
46
by Paeckelmann, Werner
Published 1922
Book
47
by Stormer, Leif
Published 1936
Book
48
by Michael, Ferdinande
Published 1936
Book
49
by Wedekind, Rud.
Published 1914
Book
50
by Franke, A.
Published 1928
Book
51
Published in Beiträge zur Seenkunde (1918)
Book
52
Book
53
by Petrascheck, Walther E.
Published 1933
Book
54
by Eisentraut, Otto
Published 1939
Book
56
Published in Die Trilobiten des Oberdevons (1926)
Book
57
by Torley, K.
Published 1908
Book
58
by Milthers, V.
Published 1934
Book
59
by Paul, Henry
Published 1937
Book
60
Published in Beiträge zur Seenkunde (1915)
Book