“...Electronic journals....”
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

“...Electronic journals....”
Full text available from East Europe, Central Europe Database: 07/01/2012 to present
Full text available from Research Library: 07/01/2012 to present