TY  - ADVS
AU  - Williams,Philip
AU  - Davies,Rhys L.L.
ED  - British Broadcasting Corporation.
TI  - Experimental design
PY  - 1973///
CY  - Milton Keynes
PB  - Open University
KW  - Experimental design
KW  - Teaching
N1  - Note: 1p; Converted into VHS 1/2 in
ER  -