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Authors whose works are in public domain in at least one jurisdiction

List of works by William Jacob Holland

Arnold Edward Ortmann

scientific article published on 01 January 1927

Germany in science, the German claim to scientific leadership refuted

[Pittsburgh]Ralston school printery[1917]

The butterfly book : a popular guide to a knowledge of the butterflies of North America

New York: Doubleday & McClure, 1899, c1898.

The butterfly book : a popular guide to a knowledge of the butterflies of North America

Garden City, N.Y.: Doubleday, 1910.

The butterfly book : a popular guide to a knowledge of the butterflies of North America

Garden City, N.Y.: Doubleday, Page, 1922, c1898.

The butterfly book a popular guide to a knowledge of the butterflies of North America

Toronto: W. Briggs, 1898.

The butterfly book;

New York,Doubleday & McClure co.,1898. | Library of Congress

The butterfly book; a popular guide to a knowledge of the butterflies of North America

New York, Doubleday & McClure Co., 1898.

The moth book : a popular guide to a knowledge of the moths of North America

New York: Doubleday, Page, 1915.

The moth book a popular guide to a knowledge of the moths of North America

Toronto: W. Briggs, 1904.

The moth book; a popular guide to a knowledge of the moths of North America

New York,Doubleday, Page & company,1905. | Library of Congress

The moth book; a popular guide to a knowledge of the moths of North America

New York, Doubleday, Page & company, 1903.

The moth book; a popular guide to a knowledge of the moths of North America ..

Garden City, New York: Doubleday, Page & company, 1916.

Through unknown African countries; the first expedition from Somaliland to Lake Lamu

To the River Plate and back: the narrative of a scientific mission to South America, with observations upon things seen and suggested

book