Manual of instructions for the survey of the public lands of the United States, 1947

Manual of instructions for the survey of the public lands of the United States, 1947

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71, 75 Meridian stellar observation for local mean time 71, 75 Polaris, the time factor in all observations 60, 76, 91 Polaris observation, time by a star ... 163, 165 Closure 174 Defective in measurement or position and not subject to rectification.


Title:Manual of instructions for the survey of the public lands of the United States, 1947
Author: United States. Bureau of Land Management
Publisher: - 1947
ISBN-13:

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