O'Brien, T. P. Plant structure and development a pictorial and physiological approach T. P. O'Brien [and] Margaret E. McCully. - London :bMcmillan,c1970. - viii, 114 p. illus. Includes bibliographies. LCCN: f 31000158 //r852 Subjects--Topical Terms: Plant cells and tissues.Botany--Anatomy. LC Class. No.: QK725 / .O27 Dewey Class. No.: 581