The ballad of Big Al  [videorecording] / 
BBC Worldwide 
 - 1 videodisc (DVD) (48 min.) :  sd., col. ;  12 cm. 
<br/><br/> Big Al produced  by Tim Haines  Big Al the science written and produced by Kate Bartlett 
<br/><br/><label>ISBN: </label> RM227.92 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Allosaurus.<br/>Dinosaurs.