Illinois Society of Architects · Chicago · leaf 414
in No. 31 for meth-ods and results of tests on house heatingapparatus. These tests have been made ondifferent kinds of house heating apparatuswith different kinds of fuel. The bulletinembodies the results of about three hundredtests. These bulletins are for free distribu-tion. VENTILATION. The term… … Adaptable to anyFurnace—Steam,Hot Water orHot Air Prr.nU,/ h Doble-Detroit Patents
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.