1
by Anweiler, Oskar
Published 1974
Published 1974
Book
3
4
5
6
7
8
9
10
11
Published 2007
Book
12
14
15
16
17
by Preobrazhensky, Evgenii A.
Published 1980
Published 1980
Book
18
19
Published in Post-Soviet puzzles
(1995)
Book