Hubbard, Charles Edward. Grasses : a guide to their structure, identification, uses and distribution in the British Isles - 2 ed. - Bungay, Suffolk : Penquin, 1968 - 462 p. : ilus. LCCN: 16703 Subjects--Topical Terms: Gramíneas--Gran Bretaña.Pastos--Gran Bretaña. Dewey Class. No.: 584.9 / H82 1968