Vries, Hugo de, 1848-1935. Opera e periodicis collata. - Utrecht, A. Oosthoek, 1918-27. - 7 v. front. (v. 1, port.) illus., plates (part col., part fold.) diagrs. 25 cm. Bibliographies at end of articles. LCCN: agr20000393 Subjects--Topical Terms: Botany.Biology. LC Class. No.: QK3 / .V7