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		No cover image available Understanding phospherous and its use in agriculture by Johnston, A. E Steen, I Publication details: Belgium: European Fertiliser Manufacturers Association, 2000 Availability: Items available for loan: CAFRE Enniskillen Library (1)Location, call number: Shelf 03 631 JOH. Place hold Add to cart (remove)
		No cover image available Nitrogen and potassium interactions in crops by Johnston, A. E Milford, G. F. J Publication details: York: Potash Development Association 2009 Availability: Items available for loan: CAFRE Greenmount Library (2)Location, call number: PDA LEAFLET, ... Place hold Add to cart (remove)
		No cover image available Response of cereals to soil and fertilizer: HGCA Research Review No. 74 by Johnston, A. E Poulton, P. R Publication details: Warwickshire: HGCA, 2011 Availability: Items available for loan: CAFRE Greenmount Library (1)Location, call number: HGCA RESEARCH REVIEW NO. 74. Place hold Add to cart (remove)
		No cover image available Understanding potassium and its use in agriculture by Johnston, A. E Publication details: Wales: PDA 2012 Availability: Items available for loan: CAFRE Greenmount Library (1)Location, call number: 631.83 JOH/PAM. Place hold Add to cart (remove)

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