http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
TV watching and computer use in U.S. youth aged 12-15, 2012
National Center for Health Statistics (U.S.)
1 online resource (7 pages) : color illustrations.
Title from title screen (viewed May 19, 2016).
Includes bibliographical references (page 7).
National Health and Nutrition Examination Survey (U.S.)