The report was prepared in response to a widely expressed need for more and better information on the prevention, abatement, and control of noise. It contains two general interest articles as well as about two hundred abstracts of material selected from the most recent and significant of the domestic and foreign literature. These abstracts are designed to provide substantive information. Publications which have been judged difficult to obtain or use have been abstracted at greater length than those judged easy to obtain. All abstracts are supported by detailed bibliographic data in order to enable the reader to obtain the source document directly. Material was selected for abstracting on the basis of potential interest to many types of readers.