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| 370 | | $aAzpeitia
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| 374 | | $aIdazlea |
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| 400 | 1 | $a De Gurruchaga, Ildefonso ($d 1902-1974) |
| 400 | 1 | $a Gurruchaga Ansola, Ildefonso ($d 1902-1974) |
| 400 | 1 | $a Gurruchaga, Ildefonso ($d 1902-1974) |
| 400 | 1 | $a Gurruchaga, Ildefonso de ($d 1902-1974) |
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| 400 | 0 | $a Ildefonso Gurrutxaga Ansola ($d 1902-1974) |
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