Annexes (p. 145-154): 1. Economic activities in terms of the International Standard Industrial Classification of All Economic Activities, Revision 4, within the scope of industrial statistics -- 2. Identifying the principal activity of a statistical unit using the top-down method. At head of title: Department of Economic and Social Affairs, Statistics Division. Includes bibliographical references (p. 155-157). Available also at UN Statistics Division website (viewed 16 Nov. 2010).