. Comparative test of centrifugal blowers. / ss. 5hetcA o/ /fV ^trai<jht Blade Blower. 1 ■ ^^BgHBgBBgHBB^SBSB^^^^mB^^^BjjBB^HI^W 1 1 ^ ^■^^^■■^■I^^^^^^^^^^^^^^^^Ht

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Keywords: ., bookcentury1900, bookdecade1910, bookidcomparativet, bookyear1911