PT - JOURNAL ARTICLE AU - L. A. Berti TI - Production Factors AID - 10.5344/ajev.1951.2.1.186 DP - 1951 Jan 01 TA - American Journal of Enology and Viticulture PG - 186--190 VI - 2 IP - 1 4099 - http://www.ajevonline.org/content/2/1/186.short 4100 - http://www.ajevonline.org/content/2/1/186.full SO - Am J Enol Vitic.1951 Jan 01; 2