"Supplement to Letter circular LC-523.""October 14, 1949."Title from caption.Mode of access: Internet
Includes bibliographical references.Mode of access: Internet.Latest issue consulted: NMI-5025 (pt. I...
Caption title."Supersedes LC 388, 627, and 764.""February 7, 1949."Mode of access: Internet
Cover title.Originally issued June 1951.Bibliography: p. 42.Mode of access: Internet
"September 12, 1949.""Superseding LC672, LC554, LC364 and LC233."Caption title.Mode of access: Inter...
"Supercedes LC-407.""Revised to Sept. 15, 1940."Caption title.Mode of access: Internet
Caption title.Publication suspended Nov. 1918-Jan. 1920.Mode of access: Internet
Description based on: Jan. 1, 1932-June 30, 1936.On cover, 1932/41- : Supplement to Circular C24.Mod...
"January 1949."Caption title.Includes bibliographical references.Mode of access: Internet
At head of title: Department of commerce. Bureau of standards.Mode of access: Internet
"Superseding LC423.""July 25, 1949."Caption title.Includes bibliographical references (pages 11-12)....
At head of title: U.S. Department of Commerce. Bureau of Standards.(With subject and author indexes,...
At head of title: U.S. Department of Commerce. Bureau of Standards."Issued November 18, 1944."Includ...
Supersedes LC 566.Revised to January 7, 1941..WB:LLC V-.6-- coverTitle from cover.Mode of access: In...
Supersedes LC 449."January 1, 1949."Caption title.Includes bibliographical references (pages 7-8).Mo...
Description based on: No. 67, published in 1934; title from cover.Separately cataloged in LC after n...
Includes bibliographical references.Mode of access: Internet.Latest issue consulted: NMI-5025 (pt. I...
Caption title."Supersedes LC 388, 627, and 764.""February 7, 1949."Mode of access: Internet
Cover title.Originally issued June 1951.Bibliography: p. 42.Mode of access: Internet
"September 12, 1949.""Superseding LC672, LC554, LC364 and LC233."Caption title.Mode of access: Inter...
"Supercedes LC-407.""Revised to Sept. 15, 1940."Caption title.Mode of access: Internet
Caption title.Publication suspended Nov. 1918-Jan. 1920.Mode of access: Internet
Description based on: Jan. 1, 1932-June 30, 1936.On cover, 1932/41- : Supplement to Circular C24.Mod...
"January 1949."Caption title.Includes bibliographical references.Mode of access: Internet
At head of title: Department of commerce. Bureau of standards.Mode of access: Internet
"Superseding LC423.""July 25, 1949."Caption title.Includes bibliographical references (pages 11-12)....
At head of title: U.S. Department of Commerce. Bureau of Standards.(With subject and author indexes,...
At head of title: U.S. Department of Commerce. Bureau of Standards."Issued November 18, 1944."Includ...
Supersedes LC 566.Revised to January 7, 1941..WB:LLC V-.6-- coverTitle from cover.Mode of access: In...
Supersedes LC 449."January 1, 1949."Caption title.Includes bibliographical references (pages 7-8).Mo...
Description based on: No. 67, published in 1934; title from cover.Separately cataloged in LC after n...
Includes bibliographical references.Mode of access: Internet.Latest issue consulted: NMI-5025 (pt. I...
Caption title."Supersedes LC 388, 627, and 764.""February 7, 1949."Mode of access: Internet
Cover title.Originally issued June 1951.Bibliography: p. 42.Mode of access: Internet