Volume 23 / No. 8 / 1993
Volume 23 No. 8. October 1993 The Journal of Gemmology THE GEMMOLOGICAL ASSOCIATION AND GEM TESTING LABORATORY OF GREAT BRITAIN OFFICERS AND COUNCIL Past Presidents: Sir Henry Miers, MA, D.Sc., FRS Sir William Bragg, OM, KBE, FRS Dr. G.F. Herbert Smith, CBE, MA, D.Sc. Sir Lawrence Bragg, CH, OBE, MC, B.Sc, FRS Sir Frank Claringbull, Ph.D., F.Inst.P., FGS Vice-Presidents : R. K. Mitchell, FGA A.E. Farn, FGA D.G. Kent, FGA E. M. Bruton, FGA, DGA Council of Management CR. Cavey, FGA TJ. Davidson, FGA N.W. Deeks, FGA, DGA I. Thomson, FGA V.P. Watson, FGA, DGA R.R. Harding, B.Sc., D.Phil., FGA, C. Geol. Members' Council A. J. Allnutt, M.Sc, G.H. Jones, B.Sc, Ph.D., P. G. Read, C.Eng., Ph.D., FGA FGA MIEE, MIERE, FGA, DGA P. J. E. Daly, B.Sc, FGA J. Kessler I. Roberts, FGA P. Dwyer-Hickey, FGA, G. Monnickendam R. Shepherd DGA L. Music R. Velden R. Fuller, FGA, DGA J.B. Nelson, Ph.D., FGS, D. Warren B. Jackson, FGA F. Inst. P., C.Phys., FGA CH. Winter, FGA, DGA Branch Chairmen: Midlands Branch: D.M. Larcher, FBHI, FGA, DGA North-West Branch: I. Knight, FGA, DGA Examiners: A. J. Allnutt, M.Sc, Ph.D., FGA G. H. Jones, B.Sc, Ph.D., FGA L. Bartlett, B.Sc, M.Phil., FGA, DGA D. G. Kent, FGA E. M. Bruton, FGA, DGA R. D. Ross, B.Sc, FGA C R. Cavey, FGA P. Sadler, B.Sc, FGS, FGA, DGA S.
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