Walter de Haas (1886–1969), who wrote under the pseudonym Hanns Günther was a prolific German author, translator, and editor of popular science books.
Read more about Walter De Haas: Work
Walter de Haas (1886–1969), who wrote under the pseudonym Hanns Günther was a prolific German author, translator, and editor of popular science books.
Read more about Walter De Haas: Work