Metabolic pathways chart, 1976 Devised by D. E. Nicholson. Large charts (40″ × 30″) are available from the publishers, Koch-Light Laboratories Ltd., Colnbrook, Bucks., SL3) BZ, U.K. at £1.27 each; compact charts (15″ × 10″) at 39p each £14.85 per 100. An explanatory booklet, including a reference index to the Chart, by Dr. Nicholson is also available from Koch-Light at 50p


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