Aguiluchos de la FAI por tierras de Aragón 2
Defense Against Invasion
1943
Food Will Win the War
1942
Out of the Frying Pan Into the Firing Line
1942
Health for the Americas: Planning for Good Eating
1946
The Grain That Built a Hemisphere
1943
Health for the Americas: The Unseen Enemy
1945
The Winged Scourge
1943
Voice of the Islands
2017
Eumetopias jubata (Otariidae) - Verhaltensweisen in der Kolonie
1978
Gasterosteus aculeatus (Gasterosteidae) - Balz und Ablaichen
1965
Bronx, New York, November 2019
2021
