School achievement of children 6-11 years as measured by the reading and arithmetic subtests of the Wide Range Achievement Test, United States
Vital and health statistics. Series 11, Data from the National Health Survey ;
Public Health Service publication ;
Schaie, K. Warner (Klaus Warner), 1928- author.
Roberts, Jean, 1918- author.
United States. Health Services and Mental Health Administration, issuing body.
National Center for Health Statistics (U.S.)
K. Warner Schaie and Jean Roberts.