The salt marsh ( motion picture) :  a question of values / 
Encyclopaedia Britannica Educational Corporation ; collaborator: Robert Reinhold. 
 - Chicago :  Encyclopaedia Britannica Educational Corporation,  1975. 
 - 1 film reel (22 min.) : sd., col. ; 16 mm. + 1 teacher's guide 
<br/><br/> Shows researchers from the University of Georgia as they examine the complex ecological system of a salt marsh.  Shows how marshland provides an important link in the ecological system of the neighbouring ocean. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tidemarsh ecology.