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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,