@article{419434, recid = {419434}, author = {Murnane, Richard J. and Raizen, Senta A.}, title = {Improving indicators of the quality of science amd mathematics education in grades K-12 [electronic resource] /}, publisher = {National Academy Press,}, address = {Washington, D.C. :}, pages = {x, 220 p.}, year = {1988}, url = {http://library.usi.edu/record/419434}, }