EElson Gray Basic Readers PrimerElson Gray Basic Readers Primerde William H. Elson, William S. Gray, Lura E. RunkelEdiciones (1)Elson Gray Basic Readers Primer (1936)Scott, Foresman and CompanyMás obras de William H. ElsonGood English, Oral and Written, Book One-three1918Child-library readersTThe new Cathedral Basic readersThe new Cathedral Basic readers1952
