Radiography
type: Concept

Electron tubes
type: Concept
notation: TK7871.7-TK7871.84

Radiography
type: Concept
notation: TR750

X-ray tubes
type: Concept
created: 1986-02-11T00:00:00
broader: Radiography
broader: Electron tubes
in scheme: lcsh
member: collection LCSHAuthorizedHeadings
member: collection LCSH General
notation: TK7871.79.X2