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Image from 19th century
Professor teaching on blackboard
Portrait Of Teacher By Blackboard In Classroom
Portrait of Stephanus Johannes Paulus Kruger (Paul Kruger), 3rd State President of the South African Republic (1825 - 1904). Vintage photo etching circa late 19th century.
Ninomiya Sontoku a closeup portrait from old Japanese yen
Antique photograph of Henri Laurent Rivière (1827 – 1883) was a French naval officer and a writer who is chiefly remembered today for advancing the French conquest of Tonkin (northern Vietnam) in the 1880s.
Older crazy chemist preparing a chemical experiment with some liquids
Professor writing on the blackboard.
Image from 19th century.
The portrait of Jan Amos Komensky from 20 Czechoslovakian Koruna banknote isolated on a white background
Portrait of Sir Frederick William Borden, Minister of Militia and Defence (1847 - 1917). Vintage photo etching circa late 19th century.
Portrait of male teacher at a university sitting in a comfortable leather chair at the department.
Vintage photograph of Ernst Schweninger, a German physician and naturopath who developed the Schweninger method, a reduction of obesity by the restriction of fluids in the diet. 19th Century
Rosette Nebula is a large and circular H II region, located on the edge of a gigantic molecular cloud in the constellation of the Unicorn Monoceros, located in the band of the Milky Way.
University professor with stick, cross processed
Yusuf Balasaguni portrait from Kyrgyz money
Richard Cobden (1804 - 1865), British manufacturer and leading figure of Manchester liberalism and the free trade movement. Wood engraving, published in 1865.
A drawing of Primoz Trubar as depicted on the Tolar banknote on a white background
19th century illustration of a scientist with microscopes, books, vials and bottles delving into the mysteries of the natural world. From a 1876 copy of Harper's New Monthly Magazine.
Portrait of teacher looking at camera and explaining topic in the classroom against blackboard
Vintage photograph of Henry Hugh Armstead an English sculptor and illustrator, influenced by the Pre-Raphaelites.
Simon Bolivar (1783 - 1830) Portrait from Venezuelan Banknotes. Venezuelan military and political leader
Young mathematician looks at formula on blackboard to solve scientific problem in classroom
Nicolaus Copernicus a portrait from money - Polish zloty
A drawing of Jovan Jovanovic Zmaj as depicted on Dinar banknote on a white background
Image from 19th century
Starry Milky Way skies photographed with telescope and astronomical camera.
man with a mad hair and a labcoat infront of a blackboard,, holding a piece of chalk
Free Images: "bestof:Thiele1.jpg en Danish astronomer matimatician and actuary Thorvald Nicolai Thiele 1838-1910 http //www math ku dk/~michael/thiele/thiele1 jpg Author 1860-1910"
Carl Nielsen c. 1908 - Restoration.jpg
Johan_Georg_Forchhammer_large.jpg
Ludvig_Mylius-Erichsen_by_Marius_Christensen_02_cropped.jpg
Nina_Bang_by_Elfelt,_large_01_cropped.jpg
Red fox predator mammal.jpg
Alex Riel photo by Gorm Valentin A1.jpg
Polish_cavalry_in_Sochaczew(1939)a.jpg
Rückzug_aus_dem_Danewerk_5-6._Februar_1864.jpg
Teddy Petersen orchestra.jpg
Leo_Mathisen.jpg
Cleo20a.jpg
Colourful flowers.jpg
Otto_Lington_with_We_Three.jpg
BOBGrindlewald.JPG
Agraffebridge.jpg
Leopard feeding.jpg
A nutrias home.jpg
Jagged leaves.jpg
Anemone nemorosa (2).jpg
Crystal cave.jpg
Fish ladders.jpg
Nimbochromis venustus Aquarium animals.jpg
Tree sequoia park.jpg
Cypress bark.jpg
Banana leaves.jpg
Wenona Marlin (22338v).jpg
Aleksandr Amfiteatrov.jpg
Ohrid ancient theatre.JPG
Sunset Acapulco.jpg
WildlifeHamilton.JPG
Soccer shcs.jpg
Brilliant sunset.jpg
Rockcuthikingtrail.jpg
Buffalo (1).jpg
Polemonium vanbruntiae FWS-2.jpg
Conifer cone park.jpg
Pine tree trunk.jpg
Conifer cones.jpg
Bird in sunrise.jpg
Rowanberries.jpg
Conifer tree in park.jpg
Spruce tree in mountains.jpg
Threes at summer day.jpg
Carl_Bloch_-_In_a_Roman_Osteria_-_Google_Art_Project.jpg
Nikolay Nikolayevich Karazin.jpg
Mother Theresa 18.jpg
AucklandZoo.1035.JPG
Black carpenter ant.jpg
Champagne Beach.jpg
New Forest ponies.jpg
SoccerPark main.jpg
Bobby charlton elgrafico.JPG
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