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by Ashurst, Philip R.
by Ashurst, Philip R.; Hargitt, Robert; Palmer, Fiona
by Steen, David; Ashurst, Philip R.
by Philip R. Ashurst
by Editor: Philip R. Ashurst (Ashurst and Associates, Consulting Chemists to the Food Industry, Hereford)
by Editor: David Steen (Consultant to the Beverage Industry, Murcia, Spain); Editor: Philip R. Ashurst (Ashurst and Associates, Consulting Chemists to the Food Industry, Hereford, UK)
by Ashurst, Philip R.; Dennis, M. j.