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The flow of water in drain tile
Plant hardiness zone map
Western forest insects
A study of the soft resins in sulphured and unsulphured hops in cold and in open storage
The western corn rootworm
Further experiments in the destruction of fly larvae in horse manure
The European elm scale in the west
Wireworms attacking cereal and forage crops
The tobacco splitworm
Zygobothria nidicola, an important parasite of the brown-tail moth
