TY  - BOOK
AU  - Ruddock, Ralph.
TI  - Evaluatoin: a consideration of principles and practice 
SN  - 0903717271
U1  - 374 
PY  - 1981///
CY  - Manchester
PB  - University of Manchester  department of adult and hig her education
KW  - Adult Education
KW  - Evaluation
N1  - Includes bibliographical references P.104-7
ER  -