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ATTACHMENT, EYEPIECE, FOR INSERTION OF PRESCRIPTION LENS

An endoscope and accessories is a device used to provide access, illumination, and allow observation or manipulation of body cavities, hollow organs… 
National Institutes of Health

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1990
1990
  • A. Cameron
  • 1990
  • Corpus ID: 108653690
Conventional 'straightthrough ' nightvision goggles are now in widespread service with many armed forces throughout the world… 
1947
1947
1. Direct observation of the living nerve-cells of Helix aspersa reveals the presence of two categories of cellular organoids…