Columbia subject headings:
Autopoiesis.
Luhmann, Niklas, 1927-1998. Soziale Systeme.
Social integration.
Social systems.
Harvard subject headings:
Autopoiesis.
Luhmann, Niklas, 1927-1998
Luhmann, Niklas, 1927-1998. Soziale Systeme.
Social integration.
Social systems.
System theory
Princeton subject headings:
Autopoiesis.
Luhmann, Niklas, 1927-1998.
Social integration.
Social systems.
System theory.