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001 - CONTROL NUMBER

• control field: 11871

003 - CONTROL NUMBER IDENTIFIER

• control field: LC (Library of Congress)

005 - DATE AND TIME OF LATEST TRANSACTION

• control field: 20180729222741.0

008 - FIXED-LENGTH DATA ELEMENTS

• fixed length control field: 070409i| anannbabn |a ana d

010 ## - LIBRARY OF CONGRESS CONTROL NUMBER

• LC control number: sh 94001959

040 ## - CATALOGING SOURCE

• Original cataloging agency: ITESM
• Language of cataloging: spa
• Transcribing agency: ITESM
• Modifying agency: ITESM

053 #0 - LC CLASSIFICATION NUMBER

• Classification number element--single number or beginning number of span: TK5105.4

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name entry element: Sistemas síncronos de transmisión de datos

450 #0 - SEE FROM TRACING--TOPICAL TERM

• Topical term or geographic name entry element: Synchronous data transmission systems

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

• Control subfield: g
• Topical term or geographic name entry element: Sistemas de transmisión de datos

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

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

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

• Control subfield: h
• Topical term or geographic name entry element: Jerarquía digital sincrónica (Transmisión de datos)

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

• Control subfield: h
• Topical term or geographic name entry element: SONET (Transmisión de datos)

670 ## - SOURCE DATA FOUND

• Source citation: DGB/UNAM, 16 marzo 2007:
• Information found: catálogo electrónico (Sistemas síncronos de transmisión de datos)

670 ## - SOURCE DATA FOUND

• Source citation: Biblioteca del Congreso (Estados Unidos), 20 agosto 2010:
• Information found: catálogo electrónico (Synchronous data transmission systems)

750 #0 - ESTABLISHED HEADING LINKING ENTRY--TOPICAL TERM

• Topical term or geographic name entry element: Synchronous data transmission systems
• Authority record control number or standard number: sh 94001959

902 ## -

• : JGS/JGS/SLB

903 ## -

• : Nivel 3