There should be a monthly test to ensure the autoclave is properly sterilizing the equipment, but no test had been done in at least six years, the complaint says.

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Often the monthly oversold analysis can alert investors to good buying opportunities as the stocks test important monthly support.

FORBES: The Dow's Most Oversold Stocks

The trial, which became known as the "Mensalao" or the "Big Monthly" allowance, was seen as a key test of Brazil's ability to hold its politicians to account for corruption.

BBC: Brazil prosecutors investigate ex-President Lula

To help neo-literate police officers test their reading ability with informative and relevant material, UNESCO publishes a monthly newspaper, Khedmat (which means "service" in the Pashto and Dari languages).

UNESCO: EDUCATION