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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,