http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
National Hospital Ambulatory Medical Care Survey
National Center for Health Statistics (U.S.)
1 online resource (vi, 108 pages) : illustrations.
Includes bibliographical references (page 15).
National Hospital Ambulatory Medical Care Survey (U.S.)