TY  - BOOK
AU  - Heyns,Barbara
TI  - Summer learning and the effects of schooling
SN  - 0123465508
PY  - 1978///
CY  - New York
PB  - Academic Press
KW  - Summer schools
KW  - Educational equalization
N1  - Includes indexes; Bibliography: p. 287-314
ER  -