Flora of CambridgeshireFranklyn Hugh Perring, Peter D. Sell, Stuart Max Walters, Harold Leslie Kerr Whitehouse · First published 2009Open the Tome
Literature and the new interdisciplinarityRoger D. Sell, Peter Verdonk · First published 1994Open the Tome
A revision of the North American species of Euphrasia L. (Scrophulariaceae)P. D. Sell, Peter Yeo · First published 1970Open the Tome
Flora of Great Britain, Ireland, Isle of Man, and the Channel IslandsP. D. Sell, Peter Sell, Gina Murrell · First published 1900Open the Tome
