Preserving the legacy introduction to env. technology  water  [video recording] : 

 - East Sussex, England:  AVS Multimedia,  1999 
 - 1  digital video disc (DVD)  (30 min.) :  sd., col. ;  12 cm. 
<br/><br/> CD 1678 
<br/><br/><label>ISBN: </label>MED0002243(Local) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental responsibility<br/>Water--Environmental aspects