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  1. Gold Leaf Agate
  2. Standard electrical circuit symbols
  3. Artwork of effects of asthma inhaler on man's lung
  4. Jurassic landscape, artwork
  5. Printed circuit board
  6. Christmas Jasper
  7. Scoliosis of the spine, artwork
  8. Time-lapse image of a solar eclipse
  9. Computer hard disc
  10. Volcanoes - USGS Earth as Art
  11. Pietersite
  12. Liver proteins
  13. Human spine, artwork
  14. The musculoskeleton of the jaw
  15. Bouncing ball
  16. Turquoise gemstone
  17. Signal Hill Oil Derricks
  18. Magic Money
  19. Uranus and its rings, artwork
  20. Water mill and pump, 18th century
  21. Cutting out the Stone of Madness or an Operation on the Head
  22. Triceratops
  23. Earth Agate E
  24. Practical Television, February 1958
  25. Acetylcholine crystals, light micrograph
  26. Tuberculosis bacteria
  27. Coronary artery disease
  28. 19th Century internal combustion engine
  29. Parana River Delta - USGS Earth as Art
  30. Bellis and Morcom steam engine
  31. Chemistry research
  32. Co-enzyme NAD (nicotinamide) crystals
  33. Avian flu virus, TEM
  34. Inner ear hair cells, SEM
  35. Calcium phosphate crystal, SEM
  36. 50 Kilowatt Broadcasting Modulator
  37. Conceptual image of DNA
  38. Cross section of human blood vessel showing atherosclerosis
  39. Retina in glaucoma, artwork
  40. Vintage Parchment Bausch And Lomb Microscope Patent Poster
  41. Wilson Dam, Alabama, forms portion of the Tennessee River barge route
  42. Avoid Downloades
  43. High-pressure steam engine, 19th century
  44. Table from Becher's 'Opuscula chymica'
  45. Carboniferous insects, artwork
  46. Mylius' Philosophia reformata
  47. Human body with internal organs, nervous system, lymphatic system and circulatory system
  48. The Plough asterism in Ursa Major