TY  - BOOK
AU  - PetrovskiÄ­,A.V.
TI  - Age-group and pedagogical psychology
U1  - 370.15 23
PY  - 1973///
CY  - Moscow
PB  - Progress Publishers
KW  - Child psychology
KW  - Learning, Psychology of
N1  - Includes bibliographical references and index
ER  -