00354naa a2200121 a 450000100080000000500110000800800410001910000180006024500640007826000090014270000200015177300610017110254532008-01-11 2007 bl --- 0-- u #d1 aBRITTO, D. de aA novel method for obtaining a quaternary salt of chitosan. c20071 aASSIS, O. B. G. tCarbohydrate polymers, Barkinggv. 69, p. 305-310, 2007.