Van Matre, Steve. <br/><br/>
Acclimatization :  a sensory and conceptual approach to ecological involvement / 
by Steve Van Matre. 
 - Martinsville, IN :  American Camping Association,  c1972. 
 - 138 p. :  ill. ;  22 cm. 
<br/><br/><label>ISBN: </label>087603007X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nature study.<br/>Outdoor education.<br/>Ecology--Study and teaching.