Hatfield, Mary M., 1943- (Nombre personal)

Bitter, G. Math. methods for the elementary and middle school, c1989: portada (Mary M. Hatfield, Public Schools of Lawrence, Kan.) data sheet (b. 2/5/43)

VIAF, sitio web, 15 enero 2019: (puntos de acceso: Hatfield, Mary M., 1943-) https://viaf.org/viaf/92292041/#Hatfield,_Mary_M.,_1943-