Warming, Eugenius, 1841-1924. Oecology of plants; an introduction to the study of plant-communities, by Eug. Warming, assisted by Martin Vahl. Prepared for publication in English by Percy Groom and Isaac Bayley Balfour. - Oxford, Clarendon Press, 1909. - xi, 422 p. 25 cm. Bibliography: p. 374-405. LCCN: agr09002122 Subjects--Topical Terms: Plant ecology. LC Class. No.: QK901 / .W3