Letter
Ktsdesign/science Photo Library
Letters #3
Jesper Klausen/science Photo Library
Cube With The Letter G Embossed
David Parker/science Photo Library
Geometrical Letter 's'
Library Of Congress
Letter From Jefferson To Franklin
American Philosophical Society
History Of The Letter A
Mikkel Juul Jensen / Science Photo Library
Neo-sumerian Clay Tablet
Library Of Congress, African And Middle Eastern Division/science Photo Library
Memory And Ageing
Cristina Pedrazzini/science Photo Library
Memory And Ageing #1
Cristina Pedrazzini/science Photo Library
Memory And Ageing #2
Cristina Pedrazzini/science Photo Library
Memory
Cristina Pedrazzini/science Photo Library
Writing Practice
Aj Photo/science Photo Library
Eye Test
Ian Hooton/science Photo Library
Pills #2
Ian Hooton/science Photo Library
Writing Practice #1
Aj Photo/science Photo Library
Met Office Commendation
British Crown Copyright, The Met Office / Science Photo Library
Pills #9
Ian Hooton/science Photo Library
Eyes
Ian Hooton/science Photo Library
Eye Test #1
Ian Hooton/science Photo Library
Spelling
Ian Hooton/science Photo Library
Reading The Alphabet
Aj Photo/science Photo Library
Stress #2
Ian Hooton/science Photo Library
Stress #3
Ian Hooton/science Photo Library
Knowledge #2
Ktsdesign/science Photo Library
Writing Practice #2
Aj Photo/science Photo Library
Yellow Fever Transmission Experiment
Otis Historical Archives, National Museum Of Health And Medicine/science Photo Library
Elderly Person Writing
Jerry Mason/science Photo Library
Greek Letter Lambda, Lower Case
David Parker
Manhatten Project Letter
Nara/science Photo Library
Multicoloured Letters
Science Photo Library
Ancient Letters
Mikkel Juul Jensen / Science Photo Library
The Chemical Symbol For Water
Wladimir Bulgar/science Photo Library
Letters #4
Jesper Klausen/science Photo Library
Letters Of The Alphabet
Andrzej Wojcicki
Letters
Jesper Klausen/science Photo Library
Letters #2
Jesper Klausen/science Photo Library
Letters #5
Jesper Klausen/science Photo Library
Letters
Andrzej Wojcicki/science Photo Library
Letter From Wallace To Darwin
Natural History Museum, London/science Photo Library
Letter Written By Vasco Da Gama
Patrick Landmann/science Photo Library
Letters #1
Andrzej Wojcicki/science Photo Library
Letters #2
Andrzej Wojcicki/science Photo Library
Letter From Darwin To Wallace
Natural History Museum, London/science Photo Library
Letters #1
Jesper Klausen/science Photo Library
Letter Carrier Wearing A Mask
National Archives/science Photo Library
Pharmacopoea (1607)
Middle Temple Library/science Photo Library
The Word Nano Made From Crystalline Grid #1
Kateryna Kon/science Photo Library
Psi Symbol And Artwork Of A Wavefunction #3
Alfred Pasieka
Genetic Material
Robert Brook/science Photo Library
Computer Keyboard #3
Tek Image/science Photo Library
Gold Bar #4
Ktsdesign/science Photo Library
Three Cubes With Letters A
David Parker/science Photo Library
Cube With Letters And Numbers
David Parker/science Photo Library
Robotic Hand And The Letters A And I
Andrzej Wojcicki/science Photo Library
Cube With The Letter K Embossed
David Parker/science Photo Library
Cube With The Letter Y Embossed
David Parker/science Photo Library
History Of The Letter A #1
Mikkel Juul Jensen / Science Photo Library
Cube With The Letter M Embossed
David Parker/science Photo Library
Cube With The Letter N Embossed
David Parker/science Photo Library
Cube With The Letter I Embossed
David Parker/science Photo Library
Cube With The Letter Q Embossed
David Parker/science Photo Library
Cube With The Letter X Embossed
David Parker/science Photo Library
Cube With The Letter W Embossed
David Parker/science Photo Library
Cube With The Letter P Embossed
David Parker/science Photo Library
Cube With The Letter D Embossed
David Parker/science Photo Library
Cube With The Letter Z Embossed
David Parker/science Photo Library
Cube With The Letter C Embossed
David Parker/science Photo Library
Cube With The Letter J Embossed
David Parker/science Photo Library
Cube With The Letter V Embossed
David Parker/science Photo Library
Cube With The Letter S Embossed
David Parker/science Photo Library
Cube With The Letter T Embossed
David Parker/science Photo Library
Cube With The Letter U Embossed
David Parker/science Photo Library