Search Engines, etc. for finding Free Online STEM Resources

“Search Engines and Beyond: A Toolkit for Find­ing Free Online Resources for Sci­ence, Tech­nol­ogy and Engi­neer­ing“
By Nedelina Tchangalova and Francy Stil­well, Uni­ver­sity of Maryland

in the Spring, 2012 issue of Sci­ence and Tech­nol­ogy Librar­i­an­ship  [ http://www.istl.org/ ]