Marking of gold filled and rolled gold plate articles other than watchcases /
National Bureau of Standards.

APA Citation

United States. National Bureau of Standards., United States. National Bureau of Standards. (1935). Marking of gold filled and rolled gold plate articles other than watchcases. Washington, D.C.: Department of Commerce, National Bureau of Standards.

MLA Citation

United States. National Bureau of Standards, and United States. National Bureau of Standards. Marking of Gold Filled And Rolled Gold Plate Articles Other Than Watchcases. Washington, D.C.: Department of Commerce, National Bureau of Standards, 1935.