@misc {MATHEDUC.02404397,
author = {Burton, G. and Clements, D. and Coburn, T.},
title = {Fourth-grade book. Buch fuer die vierte Klasse.},
howpublished = {Reston, VA: National Council of Teachers of Mathematics. 1991. 40 p. Ser. Title: Curriculum and evaluation standards for school mathematics. Addenda series. Grades K-6. [ISBN 0-87353-314-3]},
year = {1991},
msc2010 = {U32xx (D82xx D32xx)},
identifier = {1992g.01887},
}