Columbia subject headings:
Harvard subject headings:
Early childhood education--Philosophy.
Education, Preschool.
Fröbel, Friedrich, 1782-1852.
Kindergarten
Kindergarten facilities--Schools.
Pestalozzi, Johann Heinrich, (1746-1827)
Swedenborg, Emanuel, 1688-1772
Princeton subject headings:
Education, Preschool.
Kindergarten facilities--Schools.