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Study of eco-friendly color-fadable chalk
LI Zhong-ping,ZHANG Kai,DONG Zhen-yu,SUN Mei-rong,SUN Wen-hui,DONG Chuan
China Surfactant Detergent & Cosmetics . 2018, (7): 399 -402 .  DOI: 10.13218/j.cnki.csdc.2018.07.007