00681cam a2200193 4500 149318048 TxAuBib 20091209120000.0 130604s2013||||||||||||||||||||||||eng|u 42869 Project Gutenberg PGUSA eng TxAuBib Montessori, Maria. Montessori Elementary Materials [Gutenberg] : The Advanced Montessori Method / Maria Montessori; translated by Arthur Livingston. Project Gutenberg, 2013. Freely available. Electronic text. Livingston, Arthur, translator. http://www.gutenberg.org/ebooks/42869 http://www.gutenberg.org/license Rights