TY  - BOOK
AU  - 
TI  - The Open University: social sciences: a third level course research methods in education and social sciences
SN  - 0 335 07426 x
U1  - 300.72 
PY  - 1979///
CY  - Milton Keynes
PB  - The Open University Press
KW  - Classification and measurement
N1  - contents: block 5 classification and measurement
ER  -