Phillips, Roger Rix, Martyn Perennials Volume 1 : Early perennials - London : Pan Books, 1991 - Pan Garden Plants Series . ISBN: 0330309269 Subjects--Topical Terms: HorticulturePerennialsFlowering plants Subjects--Facted Index Terms: Horticulture, horticulture industry, gardening Dewey Class. No.: 635.932