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kirk-othmer encyclopedia of chemical technology. (2004). wiley interscience.
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ÀîÅà½Ü, ÍõÖ¾¸Õ. (2018). ¸ß»Øµ¯¾Û°±õ¥ÅÝIJÄÁϵÄÑо¿½øÕ¹.¡¶ËÜÁϹ¤Òµ¡·, 46(6), 1-6.
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szycher, m. (1999). szycher’s handbook of polyurethanes. crc press.
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