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Taxonomic monograph of the genus Pityophthorus Eichhoff in north and central America (Coleoptera: Scolytidae)
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Velvetleaf, Abutilon theophrasti (Malvaceae), history and economic impact in the United States
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Vorrichtung fuer Grasmaehmaschinen, um diese zum Maehen des Kartoffelkrautes geeignet zu machen
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The place of grasslands in the Earth's cover
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Organic food reserves in relation to the eradication of Canada thistles
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Zitruspresse
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Rotenone-yielding plants of South America
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Revision of the New World species of the tribe Donaciini of the coleopterous family Chrysomelidae
Raper
1946
The role of agricultural technology in Southern social change
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Discovery of Liriodendron leaves from the Neogene of Japan
Safford
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Chenopodium nuttalliae, a food plant of the Aztecs
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A Revision of Assam Citrus: Revisio Aurantiacearum XI
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1984
Keys to the Cultivars of Keladi (Colocasia Esculenta--Araceae) in Peninsular Malaysia
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Kartoffelerntemaschine mit an die Schar anschliessendem Schuettelstabrost
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Types of some American trees
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Progress on insecticidal control of apple insects
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New South American leafhoppers in the genus Docalidia, with a key to 37 species (Cicadellidae: Coelidiinae, Teruliini)
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SYSTEMATIC STUDIES ON OENOTHERA,—II. THE DELIMITATION OF OENOTHERA BIENNIS L.
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THE TYPIFICATION OF ACALYPHA VIRGINICA L.
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New bees of the genus Halictus (Hym.) from United States, Guatemala and Ecuador
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Erntemaschine fuer Zuckerrueben mit vorn eingebauter Koepfvorrichtung
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Verfahren zur Erzielung einer zusaetzlichen Ernte von gruener Blattmasse bei Kulturpflanzen
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Haushaltsschneidemaschine, insbesondere elektromotorisch angetriebene haushaltsschneidemaschine
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Verfahren zur Herstellung von Messerklingen, insbesondere von Taschenmesserklingen