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標題 Essential matters [microform] : a history of the Cryptographic Branch of the People's Army of Viet-Nam, 1945-1975 : with a supplement on cryptography in the border guard (formerly the Armed Public Security Forces), 1959-1989 / translated and edited by David W. Gaddy.

出版資料	[Fort George G. Meade, Md.] : Center for Cryptologic History, National Security Agency, 1994.

複本

說明	xviii, 196 p. : ill. ; 28 cm.
系列	United States cryptologic history. Special series ; no. 5
	United States cryptologic history. Special series ; no. 5.
Notes	Translated from the Vietnamese.
	Shipping list no.: 2002-0529-M.
Bibliography	Includes bibliographical references.
Notes	"CCH-E32-94-02"--Cover.
Reproduction	Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2002. 3 microfiches : negative.
主題	Cryptography -- Vietnam -- History -- 20th century.
	Indochinese War, 1946-1954 -- Cryptography.
	Vietnam War, 1961-1975 -- Cryptography.
添加作者	Gaddy, David Winfred.
	United States. National Security Agency/Central Security Service. Center for Cryptologic History.
添加標題	History of the Cryptographic Branch of the People's Army of Viet-Nam, 1945-1975
相關	Online version: Essential matters (OCoLC)667213001
	Print version: Essential matters (OCoLC)31953535
政府出版物號碼	D 1.2:C 88/5