Teaching about light and sight,
a handbook for classroom teachers in elementary and secondary schools.

APA Citation

National Education Association of the United States. Division of Publications. (1962). Teaching about light and sight: a handbook for classroom teachers in elementary and secondary schools. [4th ed.] Washington: National Education Association.

MLA Citation

National Education Association of the United States. Division of Publications. Teaching About Light And Sight: a Handbook for Classroom Teachers In Elementary And Secondary Schools. [4th ed.] Washington: National Education Association, 1962.