1. Zeolites and clay minerals as sorbents and molecular sieves;Barrer,1978
2. Removal of cadmium (II) by low cost adsorbents;Bhattacharya,1984
3. Clay Mineralogy;Grim,1968
4. Metal Pollution in the Aquatic Environment;Forstner,1979
5. Analytical techniques for speciation of trace metals;Guy,1975