The Gravitational force perpendicular to the galactic plane: A meeting held at the Center for Galactic Astronomy, Western Connecticut State University ... 1989 (Van Vleck Observatory contribution)

New (perfect condition)

Pages are clean and are not marked by notes, highlighting or fold.

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Pages are clean and are not marked by notes, highlighting or folds.

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Pages are intact and may have minimal notes and/or highlighting or folds.

Good (clean condition)

All pages and the cover is intact. The spine may show signs of wear. Pages include notes and/or highlighting.

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All pages and the cover is intact. Pages include considerable notes in pen or highlighter, but the text is not obscured.