Polytechnisch weekblad 13e jaargang juli (1 Ergebnisse)

Soft cover. Zustand: Fine. Zustand des Schutzumschlags: Fine. Items about - hydraulic engineering : An electric drainage system for the water board "Electra" in the province of Groningen. - Heating technique: Peat gasification in Veenhuizen - part II (closing) Increasing evaporation in steam boilers - Railways: The Congo Railway Financial Messages : - The Industrial Enterprises in 1918. electrical engineering : - The telephone system in London. A lot of advertisements, still well-known brands, such as SKF, Stork, Zeiss and others. the corners at the bottom are folded in half. In good condition.…