Columbia subject headings:
Concept of happiness.
Happiness--History--19th century.
Kierkegaard, Søren, 1813-1855.
Harvard subject headings:
Happiness--History--19th century.
Kierkegaard, Søren, 1813-1855
Kierkegaard, Søren, 1813-1855--Contributions in the concept of happiness.
Princeton subject headings:
Happiness--History--19th century.
Kierkegaard, Søren, 1813-1855.