TY  - BOOK
AU  - Ruhm,Christopher
AU  - Waldfogel,Jane
TI  - Long-term effects of early childhood care and education 
T2  - Discussion paper
PY  - 2011///]
CY  - Bonn
PB  - IZA
N1  - Includes bibliographical references
UR  - http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.418.7537&rep=rep1&type=pdf
ER  -