1. A practical treatise on the manufacture and distribution of coal gas, its introduction and progressive improvement : illustrated by engravings from working drawings, with general estimates Title: A practical treatise on the manufacture and distribution of coal gas, its introduction and progressive improvement : illustrated by engravings from working drawings, with general estimates Date: 1841. Author: Clegg, Samuel, 1814-1856. Collecting Area: Rare Books Call number: TP 751 C54X 1841 LOCAL