TY  - JOUR
DA  - 1985
LA  - eng
IS  - 1
M2  - 18
PY  - 1985
SN  - 0021-8251
SP  - 18-36
T2  - Journal for research in mathematics education
TI  - Order and equivalence of rational numbers: a  cognitive analysis
UR  - https://nbn-resolving.org/urn:nbn:de:0070-bipr-25390
Y2  - 2024-11-21T22:25:53
ER  -