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1Argitaratua 1993Gaiak “...Environmental protection Antarctica....”
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2Argitaratua 1990GaiakLiburua
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3nork Vesilind, P. AarneGaiak “...Environmental protection....”
Argitaratua 2006
Table of contents only
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10Argitaratua 1989Gaiak “...Environmental protection Australia....”
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12Argitaratua 1993Gaiak “...Environmental protection....”
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