%0 Book
%T The relative difficulty of certain topics in mathematics for slow-moving ninth grade pupils
%A Mallory, Virgil S.
%I Bureau of Publications Teachers College, Columbia University
%K Hochschulschrift
%D 1939
%C Bureau of Publications Teachers College, Columbia University
%C New York
%U http://slubdd.de/katalog?TN_libero_mab2
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