How do we know?
By: Francis P. Cavanaugh, consulting editor.
Contributors: Crampton, Gertrude, 1909- joint author.; Gray, William S. 1885-1960.; Cavanaugh, Francis Patrick, 1900- ed.
Edition: Cathedral ed.
Series: Basic studies in science, book C.
Publisher: Scott, Foresman
Published: 1947
Place of publication: Chicago
Language: eng
Number of pages: 96
Subjects: Science -- Juvenile literature
Genres: Juvenile literature.
Notes: Curriculum foundation series.
On cover : Cathedral basic science.
"Adapted from How do we know? ...by Wilbur L. Beauchamp, Gertrude Crampton, and William S. Gray."