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a synthetic organic material (anionic polyacrylamide, APAM) were selected as additives to investigate their effect on the crystallization of CaCO 3. The experimental results showed that the morphology and size of CaCO 3 crystals could be affecte
amide available, a water soluble anionic polyacryl-amide having a molecular weight of 12-15 Mg ma' and charge-density of 8-35% was most effective for furrow erosion control (Lentz et al., 1993). Subsequent use of the terms polyacrylamide, or