Income tax regulations : including proposed regulations as of November 8, 2009. Volume 4, 1.970.1-25.2704-3 - Chicago : Commerce Clearing House, 2009 - 50801-58931 (various pagings) p. ; 23 cm. Includes index. ISBN: 9780808022299 Subjects--Topical Terms: Income tax--Law legislation--United States. Subjects--Index Terms: Luật pháp Mỹ Thuế thu nhập Dewey Class. No.: 343.73