Books by Roslyn Ann Duffy

Cover of Positive Discipline

Positive Discipline

by Jane Nelsen, Roslyn Ann Duffy, Linda Escobar, Kate Ortolano, Debbie Owen-Sohocki

1996
Cover of Positive Discipline for Preschoolers

Positive Discipline for Preschoolers

by Jane Nelsen, Cheryl Erwin, Roslyn Ann Duffy

2019
Cover of DISCIPLINA POSITIVA PARA PREESCOLARES

DISCIPLINA POSITIVA PARA PREESCOLARES

by Jane Nelsen, Cheryl Erwin, Roslyn Ann Duffy, Gemma Fors

2014
Cover of DISCIPLINA POSITIVA. LOS TRES PRIMEROS AÑOS

DISCIPLINA POSITIVA. LOS TRES PRIMEROS AÑOS

by JANE NELSEN, CHERYL ERWIN, ROSLYN ANN DUFFY, JORDI FONT BARRIS

2018

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