Experimental design  [motion picture] / 
made by BBC-TV ; introduced by Philip Williams and Rhys L.L. Davies 
 - Milton Keynes :  Open University,  1973 
 - 1 film reel (25 min.) :  sd., b&w. ;  16 mm. 
 - Open University/Methods of educational enquiry  E341, film no. 7 .
<br/><br/> Note: 1p.  Converted into VHS 1/2 in. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experimental design<br/>Teaching