  1985 - Boys and Girls at Play the Development of Sex Roles (Paperback) → Hardcover ISBN-13: 9780897890557 ISBN-10: 0897890558 ?  1982 - Boys and Girls at Play Development of Sex Roles (Hardcover) ISBN-13: 9780710804938 ISBN-10: 0710804938 ?  1979 - Helping Young Children Learn (Paperback) → Paperback ISBN-13: 9780675082563 ISBN-10: 0675082560 ?  Boys and Girls at Play the Development of Sex Roles (Hardcover) → Paperback ISBN-13: 9780030632037 ISBN-10: 003063203X ?     |
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