Brouwer R Ed. Proceeding on structure and functions of plant roots - The Hague Martinus Nijhoff 1981 - xix, 414p. cm. - Development in plant and soil sciences; 4 . Standard No.: 50699 Source: Textual Subjects--Topical Terms: Botany Dewey Class. No.: I,13:20j3p1,N80, M1