%0 Journal Article %A G. Gittler %A J. Glueck %T Differential Transfer of Learning: Effects of Instruction in Descriptive Geometry on Spatial Test Performance %J Journal for geometry and graphics %D 1998 %P 071-084 %V 2 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_1998_2_1_a7/ %F JGG_1998_2_1_a7