TY  - BOOK
AU  - begle,Edward g
AU  - Richey,Herman G.
TI  - Mathematics education: The sixty-ninth Yearbook of the National Society for the study of Education
T2  - Series on mathematics education
AV  - QA14.S56 MAT 2009
U1  - 510.7105957 22
PY  - 1970///
CY  - Chicago
PB  - University of Chicago Press
KW  - Mathematics
KW  - Study and teaching
N1  - Includes index
ER  -