21
22
23
24
25
by Stumpf, Harald
Published: 1961
Book
26
by Täubert, Paul
Published: 1963
Book
27
by Farkas Gyula (1847-1930)
Published: [ca 1960]
Book
28
by Chandrasekhar, Sripati
Published: cop. 1960
Book
29
by Kneale, William Calvert
Published: 1949
Book
30
31
by Dadaân, Aleksandr Arsenovič
Published: 1989
Book
32
33
34
by Jellonek, A.
Published: 1965
Book
35
by Szöllősy Kálmán
Published: 1965
Book
36
by Braddick, Henry John James
Published: 1954
Book
37
by Strong, John
Published: [post 1930]
Book
38
by Rácz István
Published: cop. 1960
Book
39
40