Columbia subject headings:
Emigration and immigration--Songs and music--Texts.
Folk songs, Spanish--Mexico--Texts.
Folk songs, Spanish--United States--Texts.
Foreign workers, Mexican--United States--Songs and music--Texts.
Popular music--Mexico--Texts.
Harvard subject headings:
Folk songs, Spanish--Mexico--Michoacán de Ocampo--Texts.
Mexican poetry--20th century.
Mexico--Emigration and immigration--Poetry.
United States--Emigration and immigration--Poetry.
Princeton subject headings:
Folk songs, Spanish--Mexico--Michoacán de Ocampo--Texts.
Mexican poetry--20th century.
Mexico--Emigration and immigration--Poetry.
United States--Emigration and immigration--Poetry.