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diazo process
[output] A way of quickly and inexpensively copying maps using a diazo compound, ultraviolet light, and ammonia.
diazo process Rapid method for copying documents in which the image is developed by exposure to ammonia. dike Bank of earth or stone used to form a barrier, frequently and confusingly interchanged with levee.
 See also: Trilateration, Traverse, Transit, Township, Tide
  
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