Crum, Lawrence E.,  1942- <br/><br/>
Classroom activities and experiments for life science / 
[by] Lawrence E. Crum 
 - West Nyack, N.Y :  Parker Pub. Co.,  1974 
 - 224 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0131362267 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology--Study and teaching (Secondary)<br/>Biology--Experiments