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by John R. Levine (Trumansburg, NY, author ); Margaret Levine Young (Cornwall, VT, author )
by Alison Barrows; Margaret Levine Young; Joseph C. Stockman
by Cooper, Bruce S.,; Conley, Sharon; Christensen, Margaret; et al.
by Margaret Levine Young; John R. Levine
by Levine, John R.; Young, Margaret Levine