TY  - BOOK
AU  - Langer,Jonas
TI  - Theories of development
SN  - 9780030738708 (hardcover)
AV  - BF701.L33 1969 
PY  - 1969///
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - Genetic psychology
KW  - Psychology
KW  - Developmental psychology
KW  - bcl
N1  - Includes bibliographical references and index
ER  -