The Nation's Schools, Količina 36Michael Vincent O'Shea McGraw Hill, 1945 |
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Stran 73
... sound you get from DEVRY 16 mm . SOUND - ON - FILM PROJECTORS Clarion - clear reproduction of every wave in the wide range of 16 mm . -recorded sound frequencies - whether it be speech , song , instrumental music , or sound effect ...
... sound you get from DEVRY 16 mm . SOUND - ON - FILM PROJECTORS Clarion - clear reproduction of every wave in the wide range of 16 mm . -recorded sound frequencies - whether it be speech , song , instrumental music , or sound effect ...
Stran 93
... sound conditioning product ! For more than 20 years , Acousti - Celotex has given proved performance in leading schools the country over . That's the longest record of sound conditioning efficiency in the world ! So ... when you think of ...
... sound conditioning product ! For more than 20 years , Acousti - Celotex has given proved performance in leading schools the country over . That's the longest record of sound conditioning efficiency in the world ! So ... when you think of ...
Stran 79
... sound conditioning with Acousti- Celotex ! This famous perforated fibre tile - used by more schools than any other sound conditioning product in the world - offers you all four important advantages : 1. Guaranteed Efficiency . Because ...
... sound conditioning with Acousti- Celotex ! This famous perforated fibre tile - used by more schools than any other sound conditioning product in the world - offers you all four important advantages : 1. Guaranteed Efficiency . Because ...
Vsebina
The installer can repair Webster Traps | 7 |
Looking Forward | 17 |
Teachers Need Wide Horizons Earl G Herminghaus | 24 |
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