3
Έκδοση 1984
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
Ηλεκτρονική πηγή Περιοδική έκδοση
5
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
Ηλεκτρονική πηγή Περιοδική έκδοση