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Stratigraphical ProcedureProfessional Handbook series, P.F. Rawson, P.M. Allen, P.K. Brenchley, J.C.W. Cope, A.S. Gale, J.A. Evans, P.L. Gibbard, F.J. Gregory, E.A. Hailwood, S.F. Hesselbo, R.W.O’B. Knox, J.E.A. Marshall, M. Oates, N.J. Riley, A.G. Smith,