Brown, Vinson,  1912 <br/><br/>
Investigating nature through outdoor projects :  36 strategies for turning the natural environment into your own laboratory / 
Vinson Brown 
 - Harrisburg, PA :  Stackpole Books,  1983 
 - 254 p. ;  27 cm 
<br/><br/>Includes bibliographical references (p. 243-248) and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Biology--Field work