Science teaching in secondary schools in the war emergency. 

 - [Washington,  Govt. Print. Off.  1918] 
 - 19 p.  23 cm. 
 - Secondary school circular  no. 3, September, 1918 .
<br/><br/> Caption title.  At head of title: Department of the Interior ... 
<br/><br/><label>LCCN: </label>e  18001036  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching.<br/>Education, Secondary.
<br/><br/><label>LC Class. No.: </label>L111  / .A565 no. 3