Northern forests, the. 

 - British Broadcasting Corporation,,  1984. 
 - Videocassette (VHS)(55 min.) : sd., col. 1/2 in. 
<br/><br/> In the lands between the Arctic circle and the tropics, each year brings a great change between Winter and Summer and this, in turn, imposes an annual rhythym on the lives of animals and plants. Up in the North, in the great evergreen forests, conditions in mid-winter are crippingly severe. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Forest ecology.<br/>Forests and forestry.