User:Petan-Bot/Sandbox01

• • Chisholm, Hugh, ed. (1911). "Petan-Bot/Sandbox01". Encyclopædia Britannica (11th ed.). Cambridge University Press.

The above is not correct it should be:

• Chisholm, Hugh, ed. (1911). "Abacus". Encyclopædia Britannica (11th ed.). Cambridge University Press.

--PBS (talk) 09:25, 24 April 2011 (UTC)