Number of undocumented aliens residing in the United States unknown
Subtitle: report to the Congress
By: by the Comptroller General of the United States.
Publisher: U.S. General Accounting Office
Published: 1981
Place of publication: Washington, D.C
Language: eng
Subjects: Illegal aliens -- United States.
Notes: Cover title.
Apr. 6, 1981.
"GGD-81-56."
"B-125051"--Prelim. p.
Item 546-D (microfiche)