TY  - BOOK
AU  - Stufflebeam,Daniel L.
AU  - Shinkfield, Anthony J.
TI  - Systematic evaluation: A self-instructional guide to theory and practice 
T2  - Evaluation in education and human services
SN  - 0898381584
AV  - H62 S79
PY  - 1990///
CY  - Boston
PB  - Kluwer-nijhoff
KW  - Investigaciones evaluativas (Programas de acción social)
ER  -