National College of Agricultural Engineering & Plant Protection Ltd. (1972). Polyrow sprayer. National College of Agricultural Engineering].
Citace podle Chicago (17th ed.)National College of Agricultural Engineering a Plant Protection Ltd. Polyrow Sprayer. [Silsoe, Eng.: National College of Agricultural Engineering], 1972.
Citace podle MLA (8th ed.)National College of Agricultural Engineering a Plant Protection Ltd. Polyrow Sprayer. National College of Agricultural Engineering], 1972.
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