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- [5] PROGRESS IN SLIDE PROJECTOR PROGRAMMING JOURNAL OF THE AUDIO ENGINEERING SOCIETY, 1967, 15 (03): : 346 - &
- [7] An electrically controlled film slide projector JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 1938, 23 : 661 - 664
- [8] A MEANS FOR SLIDE PROJECTOR ADVANCE CONTROL JOURNAL OF THE AUDIO ENGINEERING SOCIETY, 1968, 16 (01): : 113 - &