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  1. 1
    by Shadish, William R.
    Published 1991
    Subjects “...Evaluation research (Social action programs)...”
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    Foundations of program evaluation : theories of practice /
  2. 2
    Published 1997
    Subjects “...Evaluation research (Social action programs)...”
    Book
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    Saved in:
    Evaluation for the 21st century : a handbook /

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