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Die Hymenopteren Deutschlands nach ihren Gattungen und theilweise nach ihren Arten als Wegweiser : für angehende Hymenopterologen und gleichzeitig als Verzeichniss der Halle'schen Hymenopterenfauna - Taschenberg, Ernst Ludwig, 1818 -1898 (Eduard Kummer, 1866)

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The industries of animals - Houssay, Frédéric, 1860 -1920 (W. Scott, Ltd, 1899)

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The Insect pest survey bulletin - United States. Bureau of Entomology. (Bureau of Entomology, U.S. Dept. of Agriculture, 1939)

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