1
Published 1984
Continuing Resource
2
Published 1984
Continuing Resource
3
Published 1977
Continuing Resource
4
Published 1974
Continuing Resource
5
Published 1971
Continuing Resource
6
7
by Magyar Tudományos Akadémia.
Published 1961
Continuing Resource
8
Published 1952
Continuing Resource
9
Continuing Resource
10
Continuing Resource