Statement of Work Done at the Harvard College Observatory During the Years 1877-1882

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Statement of Work Done at the Harvard College Observatory During the Years 1877-1882

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Statement of work done at the ... observatory, 1877-1882, by E.C. Pickering

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Statement of Work Done at the Harvard College Observatory During the Years 1877-1882

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Appletons' Annual Cyclopaedia and Register of Important Events

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Appletons' Annual Cyclopedia and Register of Important Events

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Catalogue of the Crawford Library of the Royal Observatory, Edinburgh

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Pamphlets. Astronomy

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English Mechanic and Mirror of Science and Art

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Reprints. Series I.

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