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Afididos Colecciones de escritos Aphis avenae Aphis pomi Afididos Huevos Insecticidas(Término temático)
Machine generated authority record.
Work cat.: (OSt)207293: Peterson, Alvah 87613, Responce of the aggs of aphis avenae fab. and aphis pomi deg. to various sprays, particularly concentrated lime-sulfur and substitutes season of 1918-1919 /