Columbia subject headings:
Causation.
Kant, Immanuel, 1724-1804.
Luhmann, Niklas, 1927-1998.
Phenomenology.
System theory.
Transcendentalism.
Harvard subject headings:
Causation
Kant, Immanuel, 1724-1804
Luhmann, Niklas, 1927-1998
Phenomenology
System theory
Transcendentalism
Princeton subject headings:
Causation.
Kant, Immanuel, 1724-1804.
Luhmann, Niklas, 1927-1998.
Phenomenology.
System theory.
Transcendentalism.