Ruhland, W. (Wilhelm) 1878-1960 text encyclopedia de# Berlin Springer-Verlag 1955- 1955 monographic ger eng 1v. : ill. ; 26 cm. hrsg. von W. Ruhland ; in Gemeinschaft mit E. Ashby ... [et al.]. Contributions in German or English; added t. p.: Encyclopedia of plant physiology. Includes bibliographical references and index. Plant physiology Plant Physiology QK711 .R83 581.1 56003135 120412 20150315091936.0 2654031