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片岡 哲朗, 浅見 望, 鈴木 正敏, 沢田 哲治. "13.乾燥精製ツベルクリン(PPD)の保存試験(第4セッション,第16回研究会)." Japanese Journal of Freezing and Drying 16.0 (1970) 72-74