Columbia subject headings:
Crystals--Defects--Congresses.
Internal friction--Congresses.
Solids--Effect of radiation on--Congresses.
Ultrasonic waves--Congresses.
Harvard subject headings:
Crystals--Defects--Congresses
Internal friction--Congresses.
Internal friction--Measurement--Congresses.
Solids--Congresses
Solids--Effect of radiation on--Congresses
Ultrasonic waves--Congresses.
Princeton subject headings: