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<br />SUMMARY. . . . . <br />TABLES . . . . . <br />ACKNOWLEDGMENTS <br /> <br />INTRODUCTION . . . . . . <br />ENVIRONMENTAL CHEMISTRY. . <br />LABORATORY INVESTIGATIONS. <br />Aquatic organisms. <br />Birds and Mammals. <br />FIELD INVESTIGATIONS . <br />RECOMMENDATIONS. . <br /> <br />LITERATURE CITED . . . <br /> <br />CONTENTS <br /> <br />Page <br /> <br />.... ..... <br /> <br />i i i <br />vi <br />vii <br /> <br />........ <br /> <br />1 <br />2 <br />6 <br />6 <br />10 <br />17 <br />24 <br />25 <br /> <br />v <br />