The Periodometer: An Instrument for Finding & Evaluating Periodicities in Long Series of Observations.

Washington: Smithsonian Institution, 1932.
ISBN: NoISBN. First Edition. Softcover(Saddle-stitched). Wrappers little soiled, rubbed, paper little age toned, almost brittle. One plate showing the instrument. Size: 8vo. 6 pages. Quantity Available: 1. Shipped Weight: 1 pound or less. Category: Science & Technology; Pictures of this item not already displayed here available upon request. Inventory No: 6408. Good Condition / No Dust Jacket.

Price: $12.50

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