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1Argitaratua 1987“...QC 994.75 .S989...”
Conference Proceeding -
2
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3Argitaratua 1974“...QC 869.4 .P64 .J174...”
Liburua -
4Argitaratua 1988“...QC 851 .C748...”
Conference Proceeding Liburua -
5
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6Argitaratua 1967“...QC 994.8 .H995 1967...”
Liburua -
7Argitaratua 1975“...QC 994.75 .P762...”
Conference Proceeding Liburua -
8