Deep down and dirty the science of soil /
It takes a thousand years to form a single inch of soil. It is a fragile layer on the surface of the land - yet essential to all life on Earth. But where did soil come from and how was it made? Gardening expert Chris Beardshaw reveals the secrets locked within soil. Traveling around in his specially...
|Other Authors:||Beardshaw, Chris,, Russell, Graham (Television producer and director),, BBC Scotland,, Films Media Group,|
New York, N.Y. :
Films Media Group,
1 videodisc (52 min.) : sound, color ; 4 3/4 in.