Changes in science performance, 1969-1973
Subtitle: exercise volume
By: National Assessment of Educational Progress
Contributors: National Center for Education Statistics
Series: Science report - National Assessment of Educational Progress -- no. 04-S-20
Publisher: NAEP; for sale by Supt. of Docs., U.S. Govt. Print. Off.
Published: 1975
Place of publication: Denver; Washington
Language: eng
Number of pages: 317
Subjects: Science -- Study and teaching -- United States -- Statistics
Genres: Statistics
Notes: "Prepared and produced pursuant to agreements with the National Center for Education Statistics."

"December 1975."