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1Argitaratua 1995“...Sage Publications,...”
Conference Proceeding Liburua -
2Argitaratua 1993“...Sage Publications,...”
Conference Proceeding Liburua -
3Argitaratua 1999“...Sage Publications,...”
Conference Proceeding Liburua -
4Argitaratua 1988“...Sage Publications,...”
Conference Proceeding Liburua