Betts Basic Readers, the Language Arts Series: Pre-primer study book. -[2] Teacher's guide book, initial reading program. -[3] Primer study book. -[4] Teacher's guide book, primer reading program. -[5] First reader study book. [6-7] Second reader study book. 2d1 & 2d2. [8-9] Third reader study book. 3d1 & 3d2
