TY - BOOK AU - Kelly,Anthony E. AU - Lesh,Richard A. TI - Handbook of research design in mathematics and science education SN - 0805832815 U1 - 507 HAN 23rd. ed. PY - 2000/// CY - Mahwah, N.J. PB - L. Erlbaum KW - Mathematics KW - Study and teaching KW - Research KW - Science N1 - Includes bibliographical references (p. 927-969) and indexes UR - http://www.loc.gov/catdir/enhancements/fy0634/99028610-d.html ER -