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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,