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• Merdinyan, P. H.
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  Fully Approved On-Off Sprinkler.
  Grinnell Fire Protection Systems Co., Inc., Providence, RI
  Fire Journal, Vol. 67, No. 1, 10-15, January 1973

• Merdinyan, P. H.
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  On-Off Sprinkler Features.
  Grinnell Fire Protection Systems Co., Inc., Providence, RI
  National Safety News, Vol. 108, No. 2, 77-78, August 1973