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7Argitaratua 1983Gaiak “...Frozen ground....”
Liburua -
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9Argitaratua 1975Gaiak “...Frozen ground Research Alaska....”
Conference Proceeding Liburua -
10Argitaratua 1973Gaiak “...Frozen ground North America Congresses....”
Conference Proceeding Liburua -
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13Argitaratua 1989Gaiak “...Frozen ground Congresses....”
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15Argitaratua 1974Gaiak “...Frozen ground Research....”
Liburua -
16Argitaratua 1978Gaiak “...Frozen ground Congresses....”
Conference Proceeding Liburua -
17Argitaratua 1989Gaiak “...Frozen ground Periodicals....”
Aldizkaria -
18Argitaratua 2003Gaiak “...Frozen ground Congresses....”
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