Brock, Richard <br/><br/>
Battle for whales  [videorecording] / 
produced by Richard Brock 
 - Australia :  Sydney :  BBC Bristol [production company] ;  Education and Training Department [distributor],  1986 
 - 1 videocassette (U-matic) (60 min.) :  sd., col.  :  3/4 in. 
<br/><br/>Editor, Robin Hellier ; photography, Nigel Markham, Hugh Mayhard ; music, Elizabeth Parker  Editor, Robin Hellier ; photography, Nigel Markham, Hugh Mayhard ; music, Elizabeth Parker 
<br/><br/>Speaker: Tony Soper, Jeremy Cherfas