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More Mudpies to Magnets: Science for Young Children

by Robert Williams, Roger A. Williams, Robert E. Rockwell

ISBN 13: 9780876591505

Format: Paperback (204 pages)
Publisher: Gryphon House
Published: Jul 1990

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Everybody Has a Body: Science from Head to Toe

by Robert A. Williams, Robert E. Rockwell, Laurel J. Sweetman

ISBN 13: 9780876591581

Format: Paperback (214 pages)
Publisher: Gryphon House
Published: Jul 1992

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