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MTONGUE describes the mother tongue of an individual. The other language variables in NAPP include , MMTONGUE, FMTONGUE, and LANGUAGE.
Mother tongue is only available for United States 1910.
Eunice Kennedy Shriver National Institute of Child Health and Human Development,
National Science Foundation,
The Church of Jesus Christ of Latter-Day Saints, and
University of Minnesota.
Copyright © Minnesota Population Center, University of Minnesota.