![The Second Grade Extension of First Grade Reading Studies || Effect of First Grade Instruction Using Basal Readers, Modified Linguistic Materials and Linguistic Readers: Extended into Second Grade]()
The Second Grade Extension of First Grade Reading Studies || Effect of First Grade Instruction Using Basal Readers, Modified Linguistic Materials and Linguistic Readers: Extended into Second GradeWilliam D. Sheldon, Nancy J. Nichols and Donald R. Lashinger · The Reading Teacher · 1967