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Title: "Grinnell" type C quartzoid bulb sprinkler [Go to resource]
Description: "Grinnell" type C quartzoid bulb sprinkler License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Grinnell, F. (designer) Identifier: 1954-110 Go to resource More Like this...
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