Columbia subject headings:
Education, Rural--Nicaragua--History--20th century.
Hirshon, Sheryl L.
Literacy--Nicaragua--History--20th century.
Teacher exchange programs--Nicaragua.
Teacher exchange programs--United States.
Teachers--United States--Biography.
Harvard subject headings:
Education, Rural--Nicaragua--History--20th century.
Hirshon, Sheryl L.
Literacy--Nicaragua--History--20th century.
Teacher exchange programs--Nicaragua.
Teacher exchange programs--United States.
Teachers--United States--Biography
Princeton subject headings:
Education, Rural--Nicaragua--History--20th century.
Hirshon, Sheryl L.
Literacy--Nicaragua--History--20th century.
Teacher exchange programs--Nicaragua.
Teacher exchange programs--United States.
Teachers--United States--Biography.