Teacher's guide for balloons and gases
By: Elementary Science Study.
Contributors: Education Development Center.; Elementary Science Study.
Publisher: Webster Division, McGraw-Hill
Published: 1971
Place of publication: New York; Toronto
Language: eng
Number of pages: 42
Subjects: Chemistry -- Study and teaching (Elementary); Gases -- Study and teaching (Elementary)
Other titles: Balloons and gases.
Notes: Prepared at the Education Development Center.