postal service
type: Concept
broader: communication industry

record industry
type: Concept
broader: communication industry

types of industry
type: Concept
narrower: communication industry

concepts
type: Collection
type: ConceptGroup
member: communication industry

broadcasting industry
type: Concept
broader: communication industry

printing industry
type: Concept
broader: communication industry

book industry
type: Concept
broader: communication industry

communication industry
type: Concept
narrower: record industry
narrower: printing industry
narrower: postal service
narrower: broadcasting industry
narrower: book industry
broader: types of industry