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by Centre International des Engrais Chimiques.; Symposium "Liquid Fertilizers : a Solution for the Future?" (1977 : Vienna);
Year: 1978., Callno: 631.812.2 SYM [Q]
Book
by United Nations Industrial Development Organization.; International Fertilizer Development Center.;
Year: c1998., Callno: 631.8 FER [Q]
Book