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Little boy holding frog in his hands
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Young boy looks at a Plains leopard frog (Rana blairi) in front of a hay bale in a farm field; Greenleaf Kansas United States of America by Joel Sa
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Young boy looks at a Plains leopard frog (Rana blairi) in front of a hay bale in a farm field; Greenleaf Kansas United States of America by Joel Sa
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Close-up of the hands of a young boy holding a small frog while on vacation; Sicamous British Columbia Canada by LJM Photo Design Pics
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Close-up portrait of a young boy holding a small frog in his hand while on vacation; Sicamous British Columbia Canada by LJM Photo Design Pics
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Close-up portrait of a young boy smiling at the camera and holding a small frog in his hand while on vacation; Sicamous British Columbia Canada by
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Young boy holds a large Bullfrog (Rana catesbeiana) caught in a Nebraska farm pond; Bennet Nebraska United States of America by Joel Sartore Photog
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Close-up of frog in lake by ZoonarEwald Fr
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Andre Geim (born 1958) Russian born physicist Professor Geim seen here holding a model of graphene is Director of the Centre for Mesoscience and N
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Frog sitting on girl hand Photo by Lily Solopova
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Girl holding frog in hand Photo by Lily Solopova
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tree frog in a childs hand
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Parent and child with a small rain frog in their hands
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Galvanis discovery 1780 (1894) Italian physiologist Luigi Galvani experimenting on frogs A professor working in Bologna Galvani (1737-1798) perfo
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Girl holding tiny frog on finger close-up Photo by DK IMAGESSCIENCE PHOTO LIBRARY
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Alessandro Volta (1745-1827) Italian physicist Volta invented the electric battery announcing his discovery in 1800 His battery consisted of alter
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Luigi Galvani (1737-1798) Italian anatomist holding the frogs legs used in his famous experiment Galvani noticed that the leg muscles of dead frog
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X-ray of a snake X-ray photogravure of an Aesculapian snake (Zamenis longissimus) produced by Austrian chemist Josef Maria Eder (1855-1944) and Aust
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X-rays of a frog X-ray photogravures of a frog from the front and back produced by Austrian chemist Josef Maria Eder (1855-1944) and Austrian photoc
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Galvanis discovery 1780 (1894) Italian physiologist Luigi Galvani experimenting on frogs A professor working in Bologna Galvani (1737-1798) perfo
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X-ray of a childs hand X-ray photogravure of the bones of a 4-year-old childs hand produced by Austrian chemist Josef Maria Eder (1855-1944) and A
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Playful boy holding frog while standing against wall
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teacher and pupils at the wood
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Boy holding a frog in his hand
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girl with a little frog
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girl with a little frog
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Young boy holding a frog; Langley British Columbia Canada
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Alessandro Volta Coloured engraving of Count Alessandro Giuseppe Anastasio Volta (1745-1827) Italian physicist and inventor of the electric battery
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Mixed race girl holding frog outdoors
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Boy kneeling on rock looking at frog
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Boy kneeling on rock looking at frog
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Boy crouching on rock looking at frog jump
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Frog crouched in grass in backyard
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Luigi Galvani Coloured engraving of Luigi Galvani (1737-1798) Italian physiologist Galvani was born in Bologna and studied at the university there
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Common toad close-up
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Common toad close-up
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