![Wissenschaftlerinnen: stehend: Fräulein Nellie A. Brown; v.l.n.r.: Miss Lucia McCollock, Miss Mary K. Bryan, Miss Florence Hedges, Die Wissenschaftlerinnen machen Kulturen der Parasiten [...]](https://cache.getarchive.net/Prod/thumb/cdn4/L3Bob3RvLzE5MTAvMDEvMDEvd29tZW4tc2NpZW50aXN0cy1zdGFuZGluZy1taXNzLW5lbGxpZS1hLWJyb3duLWwtdG8tci1taXNzLWx1Y2lhLW1jY29sbG9jay1taXNzLTEwMjQuanBn/40/30/webp "Wissenschaftlerinnen: stehend: Fräulein Nellie A. Brown; v.l.n.r.: Miss Lucia McCollock, Miss Mary K. Bryan, Miss Florence Hedges, Die Wissenschaftlerinnen machen Kulturen der Parasiten [...]")
Wissenschaftlerinnen: stehend: Fräulein Nellie A. Brown; v.l.n.r.: Mis...
A black and white photo of a group of people. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Insekten- Brutraum für die Vermehrung von Parasiten, die das Ausmaß ab...
J261827 Vereinigte Staaten Urheberrechtsamt. Nein. (57). Aus der Serie: Die Missionen in Kalifornien und der Bundesstaat Kalifornien. Orangen 23.
Jose C.M. Carvalho aus Minas, Brasilien, Doktorand am Iowa State Colle...
Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description
Dr. Albert Hassall von Ag. Abteilung für Tierparasiten, 17 / 4 / 26
A man in a suit sitting at a desk. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Miss Mary Bradley, Junior Hematologist of the Bureau of Plant Industry...
A black and white photo of a woman in a kitchen. Public domain portrait photograph, free to use, no copyright restrictions image - Picryl description
Jose C.M. Carvalho aus Minas, Brasilien, Doktorand am Iowa State Colle...
Public domain photograph of the United States in the 1930s, portraits, people, events, free to use, no copyright restrictions image - Picryl description
Jose C.M. Carvalho aus Minas, Brasilien, Doktorand am Iowa State Colle...
Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description
Platodes. - Plattentiere. Book illustration from Library of Congress
Illustration shows flatworms. Lithograph by Adolf Giltsch after sketch by Ernst Haeckel. Illus. in: Kunstformen der Natur. Von Prof. Dr. Ernst Haeckel. Hundert Illustrationstafeln mit beschreibendem Text, allg... Mehr
Forest Kellison, Mitglied des 4 H Clubs, behandelt seine Schafe gegen ...
Picryl description: Public domain image of child labor, exploitation, children workers, economic conditions, free to use, no copyright restrictions.
Allgemeine Informationen über die Harris & Ewing Collection finden Sie...
A black and white photo of a woman in a lab, Library of Congress Harris and Ewing collection Title and date from negative or negative sleeve. Gift; Harris & Ewing, Inc. 1955. General information about the Harr... Mehr
Der Versuch, das Geflügel der Nation zu verbessern. Dr. Eloise B. Cram...
Public domain photograph of a woman, female portrait, free to use, no copyright restrictions image - Picryl description
Die Insektenabteilung des Staates Iowa arbeitet an Maisparasiten. Die ...
Public domain photograph of 1930s industry, war production in the United States free to use, no copyright restrictions image - Picryl description