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موجود 299 كتب

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U. S. Dept. of agriculture. Division of botany. Bulletin no. 18

U. S. Dept. of agriculture. Division of botany. Bulletin no. 18

بواسطة Webber, Herbert John, 1865-1946 . النوع Water hyacinth . الأسماء: hyacinth / plants / roots / soil / sea و 119 اكثر
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Monographs of the United States Geological Survey v. 24

Monographs of the United States Geological Survey v. 24

بواسطة Whitfield, Robert Parr, 1828-1910 . النوع Mollusks, Fossil / New Jersey / Crustacea, Fossil / Paleontology / Miocene و 2 اكثر . الأسماء: mollusca / xx / fossils / atlantic / sciadophila phil. و 2693 اكثر
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Fish industry in the United States

Fish industry in the United States

النوع n-us--- / Fish trade / United States . الأسماء: fish / california / called / order / america و 409 اكثر
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Technical series

Technical series

النوع Beneficial insects / Insect pests . الأسماء: thorax / tachina / eye / musca / sp و 15448 اكثر
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The hop aphis in the Pacific region

The hop aphis in the Pacific region

بواسطة Parker, William Bell. [from old catalog] . النوع Hop-aphis . الأسماء: aphis / leaves / quassia / life / insects و 1059 اكثر
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Ten years' experience with the Swedish select oat

Ten years' experience with the Swedish select oat

بواسطة Carleton, Mark Alfred. [from old catalog] . النوع Oats, Swedish select. [from old catalog] . الأسماء: montana / soil / russia / cereals / american و 216 اكثر
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Sanitary condition of dairies Hearings before the Committee on rules, House of representatives, Sixty-fourth Congress, first session, on H. res. 137, providing for a committee to investigate the sanitary condition of dairies

Sanitary condition of dairies Hearings before the Committee on rules, House of representatives, Sixty-fourth Congress, first session, on H. res. 137, providing for a committee to investigate the sanitary condition of dairies

النوع n-us--- / Dairying / United States . الأسماء: bacilli / bovine / animal / animals / age و 953 اكثر
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Acquiring land for the protection of watersheds for the conservation of navigable streams

Acquiring land for the protection of watersheds for the conservation of navigable streams

بواسطة Scott, Charles Frederick, 1860- [from old catalog] / Weeks, John W. (John Wingate), 1860-1926 . النوع n-us--- / Water-supply / United States / Forest reserves / United States . الأسماء: area / areas / soil / wood / data و 211 اكثر
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Hog cholera Report

Hog cholera Report

بواسطة Lever, Asbury Francis, 1875-1940 / Haugen, Gilbert Nelson, 1859-1933 . النوع Classical swine fever . الأسماء: order / animal / areas / plants / viruses و 33 اكثر
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[United States] Bureau of fisheries. Doc. 826

[United States] Bureau of fisheries. Doc. 826

بواسطة Johnson, Robert Sidney, 1864-1916 / Stapleton, Mortimer Freeman, 1875- . النوع Fish-culture . الأسماء: fish / s b / subgroup b / area / socotora balf. f. و 629 اكثر
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