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lab recording, 18.8.1989, 25°C (Kenwood KX880HX with AKG D202, tape: M-MX90, tape no. KW07:17.00-19.00, microphone filter below 100 Hz) lab recording, 18.8.1989, 33°C, light: 60 W bulb for heat (Kenwood KX880HX with AKG D202, tape: M-MX90, tape no. KW07:30.00-35.00, microphone filter below 100 Hz) |