Commentaries to the Norwegian program for race hygiene
· by American, Australian, Belgian, British, Dutch, Finnish, French, German, Irish, Italian, Russian, Scandinavian & Swiss authorities ; the commentaries are assorted and furnished with explanatory remarks by Hans Koch and introduced by the editorial secretary of "Den Nordiske race" Cläre Greverus Mjøen
Bok Bokmål 1926
Flere språk: Engelsk, Fransk, Tysk