Youngner, V. B. The biology and utilization of grasses - New York : Academic Press, 1972 - 426 p. - Physiological ecology . - Physiological ecology . LCCN: 55517 Subjects--Topical Terms: Gramíneas.Gramíneas--Germinación.Pastos--Mejoramiento. Dewey Class. No.: 584.9 / Y6