National assessment of educational progress  a project of the Education Commission of the States. 

 - Washington  [U.S. Dept. of Health, Education, and Welfare, Education Division] National Center for Education Statistics : for sale by the Supt. of Docs., U.S. Govt. Print. Off.  1970- 
 - v.  28 cm. 
<br/><br/> Contract agency: National Center for Education Statistics.  Item 461-A-8  S/N 017-080-01535-8 
<br/><br/>Backround report no. BRS-1. Science achievment: racial and regional trends, 1969-73. 
<br/><br/><label>ISBN: </label> 1.20 
<br/><br/><label>LCCN: </label>72183665 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Curricula.--United States<br/>Science--Ability testing.--United States
<br/><br/><label>LC Class. No.: </label>LA217  / .E364 
<br/><br/><label>Dewey Class. No.: </label>375/.00973 
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 19.312:BRS-1