http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
current situation in Mexican immigration
"Reprinted from Science, volume 251, 8 March 1991, pp. 1189-1193"--P. 1.
Rand Library Collection -- label on cover.
Includes bibliographical references (page 5).