Columbia subject headings:
Individuality--Physiological aspects.
Personality--Physiological aspects.
Temperament--Physiological aspects.
Harvard subject headings:
Individuality--Physiological aspects.
Personality--Physiological aspects.
Temperament--Physiological aspects.
Princeton subject headings:
Individuality--Physiological aspects.
Personality--Physiological aspects.
Temperament--Physiological aspects.