found: Web. 3(1. engraving or photoengraving letterpress printing surfaces on zinc. 2. preparing planographic printing surfaces on zinc) planography (a process, as lithography or offset, for printing from a plane surface; cf. intaglio, letterpress, stencil)
found: Libn. gloss.(a photo-mechanical method of printing whereby designs are produced in black and white ... a relief method; Zincplate litho see Lithography)
found: LC database, 9/27/95.
notfound: Chambers dict. of sci. and tech., 1988;Bookman's glossary, 1983