TY  - BOOK
AU  - Heyneman,Stephen P.
TI  - Textbooks and achievement: : what we know
T2  - (World Bank Staff Working Papers; 298)
AV  - ERB PAM LB3048.H49 
PY  - 1978///
CY  - Washington, D.C
PB  - The World Bank
KW  - Textbooks
KW  - Cross
KW  - Culture studies
N1  - Includes bibliographical references

ER  -