TY  - BOOK
AU  - Lederman, Norman G.
TI  - You can't do it by arithmetic, you have to do it by algebra!
KW  - EDUCACION CIENTIFICA
KW  - INVESTIGACION DE CALIDAD
KW  - INVESTIGACION EDUCATIVA
KW  - METODOLOGIA DE LA INVESTIGACION
N1  - Marzo 1993
ER  -