1
Published 1997
Full text available from Social Science Database: 01/01/2016 to present
Electronic Serial
2
Published 1963
Full text available from East Europe, Central Europe Database: 01/01/1957 to 12/31/1959
Full text available from Research Library: 01/01/1957 to 12/31/1959
Full text available from East Europe, Central Europe Database: 01/01/1961 to 12/31/1969
Full text available from Research Library: 01/01/1961 to 12/31/1969
Full text available from East Europe, Central Europe Database: 01/01/1971 to 12/31/1993
Full text available from Research Library: 01/01/1971 to 12/31/1993
Full text available from East Europe, Central Europe Database: 01/01/1995 to 12/31/1996
Full text available from Research Library: 01/01/1995 to 12/31/1996
Full text available from East Europe, Central Europe Database: 01/01/1998 to 12/31/1999
Full text available from Research Library: 01/01/1998 to 12/31/1999
Full text available from East Europe, Central Europe Database: 01/01/2001 to 12/31/2003
Full text available from Research Library: 01/01/2001 to 12/31/2003
Full text available from East Europe, Central Europe Database: 01/01/2005 to 12/31/2005
Full text available from Research Library: 01/01/2005 to 12/31/2005
Full text available from East Europe, Central Europe Database: 01/01/2011 to 12/31/2015
Full text available from Research Library: 01/01/2011 to 12/31/2015
Full text available from East Europe, Central Europe Database: 01/01/2017 to 12/31/2018
Full text available from Research Library: 01/01/2017 to 12/31/2018
Full text available from East Europe, Central Europe Database: 01/01/2020 to present
Full text available from Research Library: 01/01/2020 to present
Electronic Serial
8
Full text available from Research Library: 12/01/2003 to 1 year ago
Electronic Serial
10
12
Published 1984
Full text available from Research Library: 01/01/2010 to present
Electronic Serial
16
18
Available in Education Source.
Electronic Serial
19