1
Full text available from Education Database: 01/01/2004 to present
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
2
Full text available from Education Database: 01/01/2016 to present
Full text available from Research Library: 01/01/2016 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
5
Έκδοση 1996
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Ηλεκτρονική πηγή Περιοδική έκδοση
6
Έκδοση 2005
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2008 to 01/31/2016
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
7
Full text available from Engineering Database: 10/01/2004 to present
Full text available from Latin America & Iberia Database: 10/01/2004 to present
Full text available from Research Library: 10/01/2004 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
8
Έκδοση 2010
Full text available from Latin America & Iberia Database: 01/01/2010 to present
Full text available from Research Library: 01/01/2010 to present
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
9
Έκδοση 2008
Full text available from Education Database: 01/01/2013 to 09/30/2016
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
10
Full text available from Biological Science Database: 03/01/2016 to 12/31/2016
Full text available from Biological Science Database: 01/01/2019 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
13
Full text available from Continental Europe Database: 11/01/2007 to 07/31/2016
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Ηλεκτρονική πηγή Επιστημονικό περιοδικό
14
Έκδοση 1976
Full text available from Advanced Technologies & Aerospace Database: 01/01/2011 to 12/31/2015
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Full text available from Advanced Technologies & Aerospace Database: 01/01/2018 to 07/31/2018
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Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2018 to 07/31/2018
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Full text available from Materials Science Database: 01/01/2018 to 07/31/2018
Full text available from Research Library: 01/01/2018 to 07/31/2018
Full text available from Science Database: 01/01/2018 to 07/31/2018
Ηλεκτρονική πηγή Περιοδική έκδοση
15
Full text available from Agricultural Science Database: 01/01/2006 to present
Full text available from Biological Science Database: 01/01/2006 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
17
Έκδοση 1993
Available in Fuente Académica Plus.
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
18
Έκδοση 1987
Available in Fuente Académica Plus.
Ηλεκτρονική πηγή Επιστημονικό περιοδικό