Practical geodesy : comprising chain surveying and the use of surveying instruments, levelling and tracing of contours, together with sanitary surveys of towns, trigonometrical, colonial, mining and maritime surveying / by J. Butler Williams.

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Practical geodesy : comprising chain surveying and the use of surveying instruments, levelling and tracing of contours, together with sanitary surveys of towns, trigonometrical, colonial, mining and maritime surveying / by J. Butler Williams. Public Domain Mark. Source: Wellcome Collection.

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