Francis P. Cavanaugh, Wilbur L. Beauchamp, Gertrude Crampton & William S. Gray.
How do we know? teacher's edition.
R582931. How do we know? teacher's edition. By Francis P. Cavanaugh, Wilbur L. Beauchamp, Gertrude Crampton & William S. Gray. NM: revisions. © 28Jul47; A14786. Scott, Foresman and Company (PWH); 2Aug74; R582931.
Scott, Foresman and Company|PWH