TY - BOOK ID - 138559747 TI - The rationale and design of a primary grades reading system for an individualized classroom. AU - Beck, Isabel L. AU - Mitroff, Donna D. PY - 1972 PB - Pittsburgh Univ. Learning research and development center DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:138559747 AB - ER -