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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,