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Evaluation for the 21st century : a handbook
Chelimsky, Eleanor, (1997)
Critical issues in STEM evaluation
Huffman, Douglas, (2006)
Creating effective graphs : solutions for a variety of evaluation data
Henry, Gary T., (1997)
Graphing data : techniques for display and analysis
Henry, Gary T., (1995)
Practical sampling
Henry, Gary T., (1990)
Evaluation : an integrated framework for understanding, guiding, and improving public and nonprofit policies and programs
Mark, Melvin M., (2000)