Forest Service and Extension Service [U.S.A.]

Koźmiński, Zygmunt (1902–1939)

Kuntze, Roman Marian (1902–1944)

United States Department of Agricultur.

Kuntze, Roman Marian (1902–1944)

Kling, John Bernard (1920–1949)

Jacentkovský, Dimitrij (1898–1945)

Jacentkovský, Dimitrij (1898–1945)

Jacentkovský, Dimitrij (1898–1945)

Simon, Eugène Louis (1848–1924)

Poliński, Władysław Karol Aleksander (1885–1930)

Scholz, Richard (1866–1935)

Kuntze, Roman Marian (1902–1944)

Masłowski, Ludwik (1895–1940) Masłowski, Marian Piotr (1898–1945)