Macdougal, Daniel Trembly. The influence of light and darkness upon growth and development - New York : The New York Botanical Garden, 1903 - 319 p. : ilus - Memoirs ; vol. 2 . - Memoirs ; vol. 2 . LCCN: 27994 Subjects--Topical Terms: Luz--Efecto en plantas.Plantas--Crecimiento--Aditivos. Dewey Class. No.: 581.134153 / M32