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Ėkonomika azotnoj promyšlennosti SŠA
Klinov, V. G., (1966)
Ammonium nitrate for crop production
Whittaker, Colin W., (1948)
The postwar U.S. ammonia industry
West, Jerry G., (1965)
Nature, magnitude and physical areas of potential supply-demand imbalance
Egbert, Alvin C., (1961)