Bohm, Wolfgang Methods of studying root systems Wolfgang Bohm - Berlin Springer-Verlag 1979 - xiii, 188p.: 69 fig. illus.; 25cm.- - Ecological studies analyses and synthesis, no.33 . ISBN: 354009329X Subjects--Topical Terms: Roots(Botany) Botany-EcologyBotany-Roots Dewey Class. No.: 581.498 / BOH