TY  - BOOK
AU  - Isaac,Stephen
AU  - Michael,William B.
TI  - Handbook in research and evaluation : : A collection of principles, methods, and strategies useful in the planning, design, and evaluation of studies in education and the behavioral sciences / 
PY  - 1976///
CY  - California : 
PB  - EdITS Publishers, 
N1  - Includes index
ER  -