Handbuch der Farbenfabrikation. Lehrbuch der Fabrikation, Untersuchung und Verwendung aller in der Praxis vorkommenden Körperfarben
A German technical handbook on the manufacture, testing and use of pigments, written by Georg Zerr and Robert Rübencamp and published in Berlin in 1922 for industrial chemists and paint works staff. The plates are line-engraved sectional views of furnaces, grinding mills, screw conveyors and settling vessels, with hatched masonry and metal, ruled shading and letter keys, giving designers ready-made cutaway machine diagrams and hatch textures.
