The ecosystem I  an introduction/  [kit] : 
produced by Robert Knauft 
 - North Carolina :  Biology Media,  1980 
 - 54 slides, 1 sound cassette, 1 instructor's guide ;  in container, 29 X 29 X 8 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology