Unesco                frey50        <br/><br/>
700 Science experiments for everyone. 
 Seven hundred Science experiments for evreyone. 
Unesco; foreword by Gerald Wendt 
 - Garden City, New York  Doubleday & Company, Inc.  1958 
 - 221 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>scienctific experiments
<br/><br/><label>Dewey Class. No.: </label>j507.2 Une   25