--subdivision Environmental aspects and Toxicology under individual environmental pollutants, e.g. Copper--Environmental aspects; Copper--Toxicology; and subdivision Health aspects under topics
-- See Also the narrower term Population Here are entered works on the characteristics of human populations, especially with reference to the size and density, growth, distribution, migration, and vital statistics, and the effect of these on social and economic conditions. --subdivision Population under names of countries, cities, etc., and under ethnic groups
-- See Also the narrower term Survival Here are entered works on the skills necessary to survive in a hazardous environment usually stressing self-reliance and economic self-sufficiency.
