Entry Topical Term

Number of records used in: 1

001 - CONTROL NUMBER

• control field: 20015

003 - CONTROL NUMBER IDENTIFIER

• control field: OSt

005 - DATE AND TIME OF LATEST TRANSACTION

• control field: 20191028103820.0

008 - FIXED-LENGTH DATA ELEMENTS

• fixed length control field: 860211i| anannbab| |b ana

010 ## - LIBRARY OF CONGRESS CONTROL NUMBER

• LC control number: sh 85133365

035 ## - SYSTEM CONTROL NUMBER

• System control number: 59720
• Canceled/invalid system control number: sh85133365

040 ## - CATALOGING SOURCE

• Original cataloging agency: DLC
• Transcribing agency: DLC
• Modifying agency: DLC

053 ## - LC CLASSIFICATION NUMBER

• Classification number element--single number or beginning number of span: HE8701
• Classification number element--ending number of span: HE9685
• Explanatory term: Economics

053 ## - LC CLASSIFICATION NUMBER

• Classification number element--single number or beginning number of span: TK6001
• Classification number element--ending number of span: TK6571.5
• Explanatory term: Technology

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name entry element: Telephone

450 00 - SEE FROM TRACING--TOPICAL TERM

• Topical term or geographic name entry element: Telephone service

450 00 - SEE FROM TRACING--TOPICAL TERM

• Topical term or geographic name entry element: Telephones

550 ## - SEE ALSO FROM TRACING--TOPICAL TERM

• Control subfield: g
• Topical term or geographic name entry element: Speech processing systems

550 ## - SEE ALSO FROM TRACING--TOPICAL TERM

• Control subfield: g
• Topical term or geographic name entry element: Telecommunication