TY - EDBOOK DA - 1982 LA - eng PY - 1982 SN - 2-87092-000-8 TI - Turning the plates: size perception of rational numbers among 9- and 10-year old children UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-18348 Y2 - 2025-01-31T21:49:04 ER -