Here are entered works on the condition resulting from the action of environmental contaminants. Works on the substances which contaminate or degrade the environment are entered under Pollutants. --subdivision Environmental aspects under individual environmental pollutants, e.g. Copper--Environmental aspects
Here are entered works relating especially to the methods of securing asepsis in surgical operations. Works dealing with the details of the operations themselves are entered under Surgery, Operative. Cf. note under Operations, Surgical.
