TY  - BOOK
A1  - Tourangeau, K.
A1  - Nord, C.
A1  - Lê, T.
A1  - Sorongon, A.G.
A1  - Najarian, M.
T1  - Early childhood longitudinal study, kindergarten class of 1998–99 (ECLS-K): Combined user’s manual for the ECLS-K eighth-grade and K-8 full sample data files and electronic codebooks (NCES 2009-004)
Y1  - 2009
CY  - Washington, D.C.
PB  - National Center for Education Statistics, US Department of Education

ER  -