2
Argitaratua 1989
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/1998 to present
Baliabide elektronikoa Aldizkako argitalpena
4
Argitaratua 1963
Full text available from Social Science Database: 01/01/2016 to present
Baliabide elektronikoa Aldizkako argitalpena