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001 - CONTROL NUMBER

• control field: 8307

003 - CONTROL NUMBER IDENTIFIER

• control field: MARCOrgCode

005 - DATE AND TIME OF LATEST TRANSACTION

• control field: 20190625130550.0

008 - FIXED-LENGTH DATA ELEMENTS

• fixed length control field: 190625|| aca||babn | a|a d

040 ## - CATALOGING SOURCE

• Original cataloging agency: MARCOrgCode

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name entry element: Energía nuclear
• General subdivision: Literatura juvenil