The case of the whispering class
By: illus. by Harrison Covington
Contributors: University of Florida. College of Education. Sloan Project in Applied Economics
Publisher: Univ. of Florida Project in Applied Economics, College of Education
Published: 1947
Place of publication: Gainesville
Language: eng
Number of pages: 56
Subjects: Hygiene; Juvenile literature; Textbooks
Notes: "Publication made possible by a grant from the Alfred P. Sloan Foundation, Inc."

"Some helpful references": p. 55-56.

Elementary School.