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| Author(s) [A-Z] | Year [ascending] | Title | Type | Journal | Citation |
| Pakenham, T. | 1996 | Meetings with remarkable trees | Book | | Details... |
| Parker, R.E. | 1965 | Review: 'Wayside and woodland trees' by H.L. Edlin | Journal | Ir. Nat. J. | Details... |
| Pearson, G.W., Pilcher, J.R. & Baillie, M.G.L. | 1983 | High-precision 14-C measurement of Irish oaks to show the natural atmospheric 14-C variations from 200 BC to 4000 BC | Journal | Radiocarbon | Details... |
| Pearson, G.W., Pilcher, J.R., Baillie, M.G.L., Corbett, D.M. & Qua, F. | 1986 | High-precision 14-C measurement of Irish oaks to show the natural 14-C variations from AD 1840 to 5210 BC | Journal | Radiocarbon | Details... |
| Peglar, S.M. & Birks, H.J.B. | 1993 | The mid-Holocene Ulmus fall at Diss Mere, south-east England - disease and human impact? | Journal | Veg. Hist. Archaeobot. | Details... |
| Pelham, J., Gardiner, A.S., Smith, R.I. & Last, F.T. | 1988 | Variation in Betula pubescens Ehrh. (Betulaceae) in Scotland: its nature and association with environmental factors | Journal | Bot. J. Linn. Soc. | Details... |
| Petrov, V.V. & Palkina, T.A. | 1983 | The content of dormant viable seeds in the soil of a broad-leaved forest and a spruce plantation | Journal | Vestn. Mosk. Univ. Biol. | Details... |
| Pigott, D. | 2003 | Is small-leaved lime native in Scotland or Ireland? | Journal | BSBI News | Details... |
| Pilcher, J.R. | 1979 | Application of dendrochronological techniques to the investigation of woodland history | Journal | Ir. Nat. J. | Details... |
| Pilcher, J.R. & Gray, B. | 1982 | The relationship between oak tree growth and climate in Britain | Journal | J. Ecol. | Details... |
| Pilcher, J.R. & Hall, V.A. | 2001 | Flora Hibernica: the wild flowers, plants and trees of Ireland | Book | | Details... |
| Pilcher, J.R., Baillie, M.G.L., Brown, D.M., McCormac, F.G., MacSweeney, P.B. & McLawrence, A.S. | 1995 | Dendrochronology of subfossil pine in the north of Ireland | Journal | J. Ecol. | Details... |
| Pilcher, J.R., Baillie, M.G.L., Schmidt, B. & Becker, B. | 1984 | A 7272-year European tree-ring chronology | Journal | Nature | Details... |
| Potter, S.M. | 1994 | Practical methods for distinguishing the two native British oaks and their intermediates | Journal | Quart. J. Forestry | Details... |
| Praeger, R.Ll. | 1896 | A submerged pine-forest | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1921 | Review: 'A book about plants and trees' by R. & S.G. Gurney | Journal | Ir. Nat. | Details... |
| Praeger, R.Ll. | 1927 | Male Irish yew | Journal | Ir. Nat. J. | Details... |
| Praeger, R.Ll. | 1934 | Irish junipers | Journal | Ir. Nat. J. | Details... |
| Praeger, R.Ll. | 1937 | The white-beams of Garron Point | Journal | Ir. Nat. J. | Details... |
| Rackham, O. | 1995 | Looking for ancient woodland in Ireland | Chapter | | Details... |
185 references found.