Bright
1981
Taxonomic monograph of the genus Pityophthorus Eichhoff in north and central America (Coleoptera: Scolytidae)
Spencer
1984
Velvetleaf, Abutilon theophrasti (Malvaceae), history and economic impact in the United States
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1927-03-05
Vorrichtung fuer Grasmaehmaschinen, um diese zum Maehen des Kartoffelkrautes geeignet zu machen
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1929
Organic food reserves in relation to the eradication of Canada thistles
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1981-02-12
Zitruspresse
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Phipps et al.
1933
Notes on the biology of the apple maggot
Raper
1946
The role of agricultural technology in Southern social change
Schaeffer
1925
Revision of the New World species of the tribe Donaciini of the coleopterous family Chrysomelidae
Schaeffer
1908
New Rhynchophora. III
Thompson et al.
1922
Group classification and varietal descriptions of American varieties of sweet potatoes
Safford
1918
Chenopodium nuttalliae, a food plant of the Aztecs
Venkatareddi
1969
A new species of Acroblastum (Balanophoraceae) from Poona district, India
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1932-04-25
Kartoffelerntemaschine mit an die Schar anschliessendem Schuettelstabrost
Fernald
1946
Types of some American trees
Weatherby
1937
THE TYPIFICATION OF ACALYPHA VIRGINICA L.
MacCrone
1937
A note on the tsamma and its uses among the Bushmen
Sunding
1968
Notes on the Genus Umbilicus DC.
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1951-12-27
Verfahren zur Erzielung einer zusaetzlichen Ernte von gruener Blattmasse bei Kulturpflanzen
Shrader
1920
The castor-oil industry
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1984-04-26
Haushaltsschneidemaschine, insbesondere elektromotorisch angetriebene haushaltsschneidemaschine
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1932-08-04
Kartoffelerntemaschine mit Wurfrad und seitlich von diesem angeordnetem, angetriebenem Ablegerad
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1927-08-06
Verfahren zur Herstellung von Messerklingen, insbesondere von Taschenmesserklingen
China
1946
XV.—A new species of the genus Arachnocoris Scott. with a key to the known species of the genus (Hemiptera, Nabidæ)
Dickey
1917
First recorded nesting of Bachman's sparrow in Pennsylvania