Jon Alfred Mj°en, director of the Vindern Biological Laboratory (Oslo, Norway) explaining pedigree to children Heljar, Sonja, and Fridtjof
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American Philosophical Society, , 2000.1282
Copyright 1999-2004: Cold Spring Harbor Laboratory; American Philosophical Society; Truman State University; Rockefeller Archive Center/Rockefeller University; University of Albany, State University of New York; National Park Service, Statue of Liberty National Monument; University College, London; International Center of Photography; Archiv zur Geschichte der Max-Planck-Gesellschaft, Berlin-Dahlem; and Special Collections, University of Tennessee, Knoxville.
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