Entry Topical Term

Number of records used in: 6

001 - CONTROL NUMBER

• control field: 123814

150 ## - HEADING--TOPICAL TERM

• Topical term or geographic name as entry element: Teaching machines

670 ## - SOURCE DATA FOUND

• Source citation: Work cat.: (OSt)95972: Foltz, Charles I. 123812, The World of teaching machines: programmed learning and self-instructional devices, 1961