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TABLES <br />Number <br />Page <br />1 World Pb production, consumption, and principal <br />end uses (modified from Harrison and Laxen 1981; <br />Demayo et al. 1982) . . . . . . . . . . . . . . . . . . 6 <br />2 Use patterns for Pb in selected countries <br />(from EPA 1979) . . . . . . . . . . . . . . . . . . . . 7 <br />3 Amounts of lead in global reservoirs <br />(modified from Nriagu 1978a) . . . . . . . . . . . . . . 17 <br />4 Lead concentrations in selected nonbiological <br />materials . . . . . . . . . . . . . . . . . . . . . . . 18 <br />5 Lead concentrations in field collections of <br />selected species of flora and fauna. Values shown <br />are in mg Pb/kg (ppm) fresh weight (FW), or dry <br />weight (DW) . . . . . . . . . . . . . . . . . . . . . . 24 <br />6 Lethal and sublethal effects of lead to selected <br />species of aquatic organisms . . . . . . . . . . . . . . 58 <br />7 Lethal and sublethal effects of lead to selected <br />species of birds . . . . . . . . . . . . . . . . . . . . 75 <br />8 Lethal and sublethal effects of lead to selected <br />species of mammals . . . . . . . . . . . . . . . . . . . 88 <br />9 Proposed lead criteria for the protection of <br />natural resources and human health. . . . . . . . . . . 102 <br />vi