--individual diseases, e.g. Cancer; and subdivision Diseases under individual organs and regions of the body, individual animals and groups of animals, classes of persons and ethnic groups, e.g. Heart--Diseases; Fishes--Diseases; Infants--Diseases; African Americans--Diseases
Here are entered works on the relationship of humans to the natural environment. Works on the relationship of humans to their sociocultural environment are entered under Social ecology. Works on the composite of physical, biological, and social sciences concerned with the conditions of the environment and their effects are entered under Environmental sciences. Works on the interrelationships of organisms and their environment, including other organisms, are entered under Ecology.
