Berglund, Torkel. Metallographers' handbook of etching, [electronic resource] / compiled by Torkel Berglund. Translated from the Swedish by William H. Dearden.. — London, : Pitman,, 1931.. — ix, 183 p. : illus., tables (part double) diagrs. 22 cm. Includes advertising matter. Bibliography: p. 163-172. LCCN: 32007106 Subjects--Topical Terms: Metallography. LC Class. No.: TN690 / .B5 Dewey Class. No.: 669