--subdivision Parasites under individual organs and regions of the body, e.g. Heart--Parasites
Human Performance Technology -- See Performance technology Here are entered works dealing with the set of methods and processes for solving problems, or realizing opportunities, related to improving the performance of organizations or individuals.
Human Population -- See 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