Printing of Patent Office Specifications by the Offset Method :
hearings before the United States Joint Committee on Printing, Seventy-Fifth Congress, third session, on Apr. 18, 20, 1938.

APA Citation

United States. Congress. Joint Committee on Printing. (1938). Printing of Patent Office Specifications by the Offset Method: hearings before the United States Joint Committee on Printing, Seventy-Fifth Congress, third session, on Apr. 18, 20, 1938. Washington: U.S. G.P.O..

MLA Citation

United States. Congress. Joint Committee on Printing. Printing of Patent Office Specifications by the Offset Method: Hearings Before the United States Joint Committee On Printing, Seventy-Fifth Congress, Third Session, On Apr. 18, 20, 1938. Washington: U.S. G.P.O., 1938.