000
002500000a22001090004500
245
_a
Program evaluation in social research
100
_a
Morell, J.A.
260
_a
New York
_b
Pergamon
_c
1979
080
_a
3.001.5
_b
M6
041
_a
EN
942
_c
BK
999
_c
111732
_d
111732