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1924 |
Pattedyr-slaegter.... III. Ungulata, Cetacea.
Copenhagen, H. Hagerups Forlag: 1-270. Frontisp.
–Engl. transl.: The interrelationships of the mammalian genera. Vol. III. Ungulata, Cetacea. Copenhagen, C. A. Reitzels Forlag: 1-308, frontisp., 1942. Sirenia, 134-138, 186-187; Desmostylus, 187-188 (148-153, 211-214 in 1942 ed.).
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