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1898

Text Page (3): Preface.

Pamphlet

(Text Page) Preface.

1898

Text Page (5): Magnetic Rang …

Pamphlet

(Text Page) Magnetic Ranges …

1898

Text Page 6: Magnetic Ranges …

Pamphlet

(Text Page) Magnetic Ranges, …

1898

Text Page 7: Table of Views …

Pamphlet

(Text Page) Form for Ranges …

1856

Terrestrial magnetism.

Physical Atlas

Terrestrial Magnetism.

1856

Terrestrial Magnetism. (cont …

Physical Atlas

Terrestrial Magnetism. (cont …