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By HUTCHINSON, Sarah E. | Sawyer, Stacey C. | Coulthard, Glen J.. Boston IRWIN 1995 . vii, 210 p.- , Includes index. 256164673

By HUTCHINSON, Sarah E. | Sawyer, Stacey C. | Coulthard, Glen J.. Boston IRWIN 1994 . vi, 211 p.- , Includes index. 256136491