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1nork Watson, Collin J., Billingsley, Patrick, Croft, D. James, Huntsberger, David V.
Argitaratua 1988Liburua -
2nork Huntsberger, David V.
Argitaratua 1980Liburua -
3
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4nork Huntsberger, David V.
Argitaratua 1980Liburua