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1·Handbook of Enology, Volume 2, 2nd Edition, The Chemistry of Wine: Stabilization and Treatments.

葡萄酒酿造学手册，第2卷，第2版，酒化学：稳定性与处理。

2·Low Input Viticulture & Enology, Inc. certifies participating wineries and vineyards in the Pacific Northwest.

这两个网站可证明太平洋西北区采用天然种植的酿酒商和葡萄园。