Statistical abstract of the United States, 2003 : the nat data b. / U.S. Dep. of Commerce. - 123rd ed.. - Washington : U.S. gov. print off., 2003. - xv, 1030 p. : ill. ; 23 cm.см.. - ISBN 0160428246[MFN: 4523]
Statistical abstract of the United States, 2011 : the National data book / U.S. Depart. of Commerce Economics a. Statistics administration U.S. Census Bureau. - 130th ed.. - Washington : National Bibliogr. of U.S. Government publ., 2010. - xviii, 1010 p. : tab. ; 24 cm.см.. - (Statab ; 11, ISSN 0081-4741). - ISBN 978-0-16-086681-4[MFN: 29227]
Statistical abstract of the United States, 2012 / U.S. Census Bureau, U.S. Dep. of Commerce. - 131st ed.. - [Washington : U.S. Gov. print. off., 2011]. - xvii, 1004 p. : tab., m. ; 23 cm.см.. - ISBN 978-0-16-089114-4[MFN: 33698]