Jerry Wyckoff

Born 1935

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3 books

Books

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Discipline without shouting or spankingJerry Wyckoff
Discipline without shouting or spanking
Jerry Wyckoff · 1984 · 148 pages
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How to discipline your six-to-twelve-year-oldJerry Wyckoff
How to discipline your six-to-twelve-year-old
Jerry Wyckoff · 1991 · 247 pages
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Dyscyplina bez krzyku i biciaJerry Wyckoff
Dyscyplina bez krzyku i bicia
Jerry Wyckoff · 2005 · 245 pages
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