The Nation's Schools, Količina 59Michael Vincent O'Shea McGraw Hill, 1957 |
Iz vsebine knjige
Zadetki 1–3 od 81
Stran 184
... sound insulating door . Pre - measured for sound reduction , you know in advance the final noise factor . Sound Insulating Doors come in 35 , 40 and 43 decibel degrees of transmission loss . Write for details or con- sult your architect ...
... sound insulating door . Pre - measured for sound reduction , you know in advance the final noise factor . Sound Insulating Doors come in 35 , 40 and 43 decibel degrees of transmission loss . Write for details or con- sult your architect ...
Stran 103
... Sound Conditioning , a new environment of improved teach- ing and learning efficiency is achieved . Gone are the annoying echoes and re - echoes of unwanted sounds- the distracting noises in halls and rooms that are a part of daily ...
... Sound Conditioning , a new environment of improved teach- ing and learning efficiency is achieved . Gone are the annoying echoes and re - echoes of unwanted sounds- the distracting noises in halls and rooms that are a part of daily ...
Stran 186
... SOUNDS R35 R35 R40 . from room to room transmission STOP AIRBORNE SOUND WITH HARDWOOD PRODUCTS SOUND INSULAT- ING DOORS Practice Room Practice Room R35 R35 R40 Corridor Practice Room Isolate disturbing noise and sound in music and band ...
... SOUNDS R35 R35 R40 . from room to room transmission STOP AIRBORNE SOUND WITH HARDWOOD PRODUCTS SOUND INSULAT- ING DOORS Practice Room Practice Room R35 R35 R40 Corridor Practice Room Isolate disturbing noise and sound in music and band ...
Vsebina
Editorial Director | 31 |
Assistant Editors | 31 |
To See It Up Close | 90 |
3 preostalih delov ni prikazanih
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
American architects Association Atlantic City audio-visual automatic board of education catalog cation cent Chalkboard Chicago child City classroom color committee COMPANY complete construction Coolite cost court curriculum Day-Brite Lighting Dept desegregation designed details circle educa Electric Electro-Voice equipment federal film floor folding funds glass grade high school Illinois improve inches installation instruction Kewanee learning light machine mailing card maintenance materials Medart meet ment merit rating models National Ohio operation organization panels parents president principal problems projector Prtg Public Schools pupils RAULAND Samsonite school administration school board school building school bus school districts school lunch school system served spirit duplicator staff steel storage superintendent Supt teachers teaching tion tional Tontine unit University VIRCO wall Write York