1. Commercial fertilizers 2011;Aapfco Publications;Association of American Plant Food Control Officials,2013
2. Prospects—Commodity Markets (Global Economic Prospects;Baffes,2013
3. The impacts of biofuel policies on spatial and vertical price relationships in the US fertilizer industry;Bekkerman;Appl. Econ. Perspect. Pol.,2020
4. Item 90004 RR_Price_Authority_Details Urea,2013
5. Item 90004-Tank_Price_Authority, Liquid,2013