How do we know?
By: By Wilbur L. Beauchamp, Gertrude Crampton, and William S. Gray, reading director.
Edition: [Teachers ed.]
Series: Curriculum foundation series. Basic studies in science, book C
Publisher: Scott, Foresman
Published: 1952
Place of publication: Chicago
Language: eng
Subjects: Science -- Juvenile literature
Genres: Juvenile literature.
Notes: The main work, also issued separately, is preceded by the authors' "Guidebook for How do we know?" with special t.p.