The Nation's Schools, Količina 41Michael Vincent O'Shea McGraw Hill, 1948 |
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Zadetki 1–3 od 79
Stran 80
... Unit Ventilator . Knowing that the biggest obstacle to perfect control of unit ventilators was the in- ability to gradually throttle the steam supply to the heating element and at the same time dis- tribute the steam uniformly ...
... Unit Ventilator . Knowing that the biggest obstacle to perfect control of unit ventilators was the in- ability to gradually throttle the steam supply to the heating element and at the same time dis- tribute the steam uniformly ...
Stran 67
... unit com- plements the decorative plan of almost any schoolroom . There's another practical angle , too , about the finish of the Herman Nelson Unit Ventilator . Applied at the factory with water - proof cement , the durable , linoleum ...
... unit com- plements the decorative plan of almost any schoolroom . There's another practical angle , too , about the finish of the Herman Nelson Unit Ventilator . Applied at the factory with water - proof cement , the durable , linoleum ...
Stran 105
... unit is compact and efficient and is finished in classroom brown . Bavinco Mfg . Corp. , Dept. NS , 2745 Seneca St. , Buffalo 10 , N.Y. ( Key No. 374 ) Drinking Water Cooler The new Temprite Cooler is a self- contained unit with all ...
... unit is compact and efficient and is finished in classroom brown . Bavinco Mfg . Corp. , Dept. NS , 2745 Seneca St. , Buffalo 10 , N.Y. ( Key No. 374 ) Drinking Water Cooler The new Temprite Cooler is a self- contained unit with all ...
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