Método de Trachtenberg (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "Método de Trachtenberg" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

1books.google.com

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87^th place

books.google.com

Trachtenberg, Jakow (1960). Cutler, Ann, ed. The Trachtenberg Speed System of Basic Mathematics. [S.l.]: Doubleday and Company, Inc. 270 páginas 1962 edition: ISBN 9780285629165.

twitter.com

@GiftedtheMovie (9 de março de 2017). «Hobbies include playing with legos and learning the Trachtenberg system 👷‍♀️📚✏️ @McKennaGraceful is Mary // #GiftedMovie» (Tweet) – via Twitter zero width joiner character character in |título= at position 74 (ajuda)