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2. Chemical weed-control equipment;Akesson,1948
3. Equipment for crop protection—spraying equipment—part 2: test methods for hydraulic sprayers,1997
4. Sprayers and liquid fertiliser distributors—environmental protection—part 2: low crop sprayers and part 3: air-assisted sprayers for bushes and tree crops,1997
5. Equipment and calibration: low-pressure sprayers;Bode,1981