Production methods in champagne : based on materials presented at the 1989 New York Sparkling Wine Symposium Champagne Comes to Chautauqua, August 9 and 10, 1989, State University of New York College at Fredonia / material prepared by Georges Hardy ; edited by Robert Pool, Thomas Henick-Kling, and James Gifford ; translated by Inga-Mai Larsson and Mary Lee Weile