Beetz, Brigitta <br/><br/>
Investigations for the biology laboratory 
Brigitta Beetz, Samuel Carpenter, Jules Fraden 
 - rev. ed. 
 - Palo Alto, California  The National Press  1965 
 - 144 p. ; 26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology--Laboratory manuals