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References
1.
Environmental Policy of the ICI Group
, Public Relations Dept, PO Box No 1, Billingham, Cleveland TS23 1LB.
2.
The Moving Strip Filter
, VW Scientific, Outgang Lane, Osbaldwick Industrial Estate, York YO1 3UP.
3.
The Gammatrol Open Channel Flowmeter
, ICI Tracerco, PO Box 1, Billingham, Cleveland TS23 1LB.