The textbook  "Biologi for gymnasiet 2. Zoologi." by Norwegian biologist and professor Kristine Bonnevie. 2nd edition.
<bdi><a href="https://en.wikipedia.org/wiki/en:Kristine_Bonnevie" class="extiw" title="w:en:Kristine Bonnevie"><span title="Norwegian biologist and Norway's first female professor (1872–1948)">Kristine Bonnevie</span></a>
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<bdi><a href="https://en.wikipedia.org/wiki/en:National_Library_of_Norway" class="extiw" title="w:en:National Library of Norway"><span title="national library">National Library of Norway</span></a>
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