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- [3] PRODUCTION OF BELL AND HOWELL PRESSURE TRANSDUCERS MACHINERY AND PRODUCTION ENGINEERING, 1974, 125 (3231): : 482 - 487
- [4] THE BELL & HOWELL COOKE VARO LENS JOURNAL OF THE SOCIETY OF MOTION PICTURE ENGINEERS, 1932, 19 (04): : 329 - 339
- [5] AUTOMATIC PRINTER LIGHT SELECTOR FOR BELL AND HOWELL MODEL-D AND BELL AND HOWELL-J PRINTERS JOURNAL OF THE SMPTE-SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS, 1958, 67 (02): : 78 - 80
- [10] THE BELL-AND-HOWELL ADDITIVE COLOR PRINTER JOURNAL OF THE SMPTE-SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS, 1958, 67 (09): : 611 - 611