Columbia subject headings:
Harvard subject headings:
Dingler, Hugo, 1881-1954--Congresses.
Festschriften
Quantum theory--Congresses
Science--Experiments--Congresses.
Science--Philosophy--Congresses
Princeton subject headings:
Dingler, Hugo, 1881-1954--Congresses.
Dingler, Hugo, 1881-1954. Experiment--Congresses.
Science--Philosophy--Congresses.