TY  - BOOK
AU  - Colvin, Ralph .W
AU  - Zaffiro, Esther.M (Ed)
TI  - Preschool education: A handbook for the training of early childhood educators
SN  - 0-8261-1620-5
U1  - 372.21 
PY  - 1974///
CY  - New York
PB  - Springer Publishing Company
ER  -