Digest of education statistics, 2011 / Thomas D. Snyder, Sally A. Dillow. - [Washigton] : NCES, IES, U.S. depart. of education, 2012. - xxviii, 726 p. : tab. ; 28 cm.см.. - ISBN 978-0-16-091392-1[MFN: 40116]
The condition of education, 2012 : May, 2012 / Susan Aud [et al.] ; ed.: Thomas Nachazel, Carolyn Yohn. - Washington : U.S. Depart. of education, 2012. - xxii, 351 p. : ill., tab ; 28 cm.см.. - ISBN 978-0-16-091379-2[MFN: 40123]