Porley, Ron. Arable bryophytes : a field guide to the mosses, liverworts and hornworts of cultivated land in Britain and Ireland/ Ron Porley. - Hampshire: WILD Guides, 2008. - 140 p.: ill.; 21 cm. includes index. ISBN: 9781903657218 Subjects--Topical Terms: Bryophytes -- Grande-Bretagne. -- Bretagne. -- Identification Index Terms--Curriculum Objective: bryophyte -- b- Grande-Bretagne. -- Bretagne. LC Class. No.: HB171.5 / POR 2016