Entry Topical Term

Number of records used in: 2

001 - CONTROL NUMBER

• control field: 11019

003 - CONTROL NUMBER IDENTIFIER

• control field: DUET_Lib

005 - DATE AND TIME OF LATEST TRANSACTION

• control field: 20240314094700.0

008 - FIXED-LENGTH DATA ELEMENTS

• fixed length control field: 240314|| aca||aabn | a|a d

040 ## - CATALOGING SOURCE

• Original cataloging agency: DUET_Lib
• Transcribing agency: DUET_Lib

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name entry element: 1 . Vacuum Tubes

670 ## - SOURCE DATA FOUND

• Source citation: Work cat.: (DUET_Lib)6835: Eastman , Austin V . 11018, Fundamentals of Vacuum Tubes /, c1959 .