Keywords: Boas1881.jpg en Franz Boas Beiträge zur Erkenntniss der Farbe des Wassers Dissertation Kiel 1881 1881 http //bc ub leidenuniv nl/bc/tentoonstelling/hora_est/inleiding html Leiden University Library Franz Boas 1858-1942 PD-old-70 Uploaded with UploadWizard Franz Boas Dissertations Christian-Albrechts-Universität zu Kiel Printed works Leiden University Library Photographs uploaded by User Vysotsky |