by United States. Delegation to the general assembly of the International institute of agriculture, 1913

1913

by Institute of International Education (New York, N.Y.)

1921

by Institute of International Education (New York, N.Y.)

1921

by International Institute of Agriculture. AGRICULTURAL INTELLIGENCE AND PLANT DISEASES, BUREAU OF

1911

by International Dry-Farming Congress

1911

by International Dry-Farming Congress

1909

by International Dry-Farming Congress

1911

by International Farm Congress of America

1910

by International Irrigation Congress

1915

by International Bureau of the American Republics

1909

by International Irrigation Congress

1912

by Canada. Commission of the International institute of agriculture

1914