Full text available from Biological Science Database: 01/01/2003 to 12/31/2003
Full text available from East Europe, Central Europe Database: 01/01/2003 to 12/31/2003
Full text available from Research Library: 01/01/2003 to 12/31/2003
Full text available from Biological Science Database: 01/01/2005 to 12/31/2005
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 Biological Science Database: 01/01/2007 to 12/31/2015
Full text available from East Europe, Central Europe Database: 01/01/2007 to 12/31/2015
Full text available from Research Library: 01/01/2007 to 12/31/2015

Full text available from Biological Science Database: 01/01/1965 to 12/31/1998
Full text available from East Europe, Central Europe Database: 01/01/1965 to 12/31/1998
Full text available from Environmental Science Database: 01/01/1965 to 12/31/1998
Full text available from Biological Science Database: 01/01/2004 to present
Full text available from East Europe, Central Europe Database: 01/01/2004 to present
Full text available from Environmental Science Database: 01/01/2004 to present

Full text available from East Europe, Central Europe Database: 01/01/2010 to present
Full text available from Engineering Database: 01/01/2010 to present

Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2004 to 12/31/2004
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2006 to 01/31/2013