Columbia subject headings:
Gamm, Gerhard.
Negativity (Philosophy)
Uncertainty.
Harvard subject headings:
Gamm, Gerhard--Congresses.
Negativity (Philosophy)--Congresses.
Uncertainty--Congresses
Princeton subject headings:
Gamm, Gerhard--Congresses.
Negativity (Philosophy)--Congresses.
Uncertainty--Congresses.