TY  - BOOK
AU  - Isaac,Stephen
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 
AV  - BF76.5 I82
PY  - 1971///
CY  - San Diego, Calif.
PB  - Edits
KW  - Educación
KW  - Investigación
KW  - Psicología
ER  -