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by Project Management Institute
by Polan, Elaine U., Ph.d.; Talor, Daphne R., R.N.
by Assessment Technologies Institute, LLC
by David Halliday (University of Pittsburgh); Robert Resnick (Rensselaer Polytechnic Institute); Jearl Walker (Cleveland State University)
by Larson, Charles U.
by Arbinger Institute
by Russin, Robin U.; Downs, William Missouri
by American Geological Institute, AGI; NAGT - National Association of Geoscience Teachers; Busch, Richard M.; et al.
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