PT - JOURNAL ARTICLE AU - H. P. Olmo TI - Methods Used in Grape Variety Development and Improvement AID - 10.5344/ajev.1955.6.1.20 DP - 1955 Jan 01 TA - American Journal of Enology and Viticulture PG - 20--22 VI - 6 IP - 1 4099 - http://www.ajevonline.org/content/6/1/20.short 4100 - http://www.ajevonline.org/content/6/1/20.full SO - Am J Enol Vitic.1955 Jan 01; 6