Author: Haanel, E., 1904.:
Title: On the location and examination of magnetic ore deposits by magnetometric measurements.
Description: Ottaw: Department of the Interior. 8vo. pp. x,132, 5 photogr. pls. of equipment, 54 figs., 8 fold. diagrs., tabs., index. Orig. printed cloth. Light trace of fold to front cover, very good otherwise. - The first full account in English of the magnetometric method in the surveying and prospection of magnetic ore bodies, until then developed and applied successfully in Sweden.

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