Germany gas mask, Model 1917 traced from https://commons.wikimedia.org/wiki/File:Germany_gas_mask,_Model_1917_-_National_World_War_I_Museum_-_Kansas_City,_MO_-_DSC07567.JPG
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Germany gas mask, Model 1917 free icon was designed by liftarn for icons Png and presented to its users.
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11/27/2017