Nelson, Martin Varieties of cotton, 1919 / by Martin Nelson and Edgar A. Hodson - Fayetteville, Arkansas : University of Arkansas - 8 p. - Bulletin; 166 . Encuadernado con otros impresos similares LCCN: 206802 Subjects--Topical Terms: Algodón -- variedades Dewey Class. No.: PA-C 633.51 B84