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Study on C. C. C. Values and the Surface Carboxyl Contents of Methy1 Methacrylate and Benzyl Acrylate Copolymer Soap-free Water-Solubilized Colloids; 甲基丙烯酸甲脂和丙烯酸苄脂共聚物無皂水溶膠C.C.C。值和表麪羧基含量的研究。