DescriptionEn-us-bacterium.ogg Audio pronunciation of the term 'bacterium' in United States English. Date 10 March 2007 Source Self, recorded using the...
domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. This file has been identified...
domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. Public domain works must be out...
§ 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use. This file has...