TY  - BOOK
AU  - Irwin D. Michelle
AU  -  Bushnell M. Margaret
TI  - Observational strategies for child study
SN  - 0-03-045726-2
PY  - 1980///
CY  - New York, USA
PB  - Holt, Rinehart and Winston 
KW  - Child Psychology
ER  -