Agricultural machines, namely, agricultural aerial machines for spreading seeds, fertilizers, herbicides, insecticides, pesticides, aerial top dressings and other agricultural chemicals and fluids, and crop dusting; agricultural implements, other than hand-operated, namely, agricultural implements for spreading seeds, fertilizers, herbicides, insecticides, pesticides, aerial top dressings and other agricultural chemicals and fluids, and crop dusting; agricultural machines for aerial and surfa...