Sinal de tráfico (Galician Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sinal de tráfico" in Galician language version.

refsWebsite

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1books.google.com

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books.google.com

Prasad, Prakash Charan (1977). Foreign Trade and Commerce in Ancient India (en inglés). Abhinav Publications. p. 117. ISBN 978-81-7017-053-2.