TY - GEN AU - Muzzarelli, R.A.A TI - Natural chelating polymers: alginic acid, chitin and chitosan T2 - International Series of Monographs in Analytical Chemistry, Vol.55 SN - 0080172350 U1 - 547.84 PY - 1973/// CY - Oxford PB - Pergamon Press KW - CHEMISTRY ER -