Aliens Employment -- See Foreign workers Here are entered works on nationals of one country working in another country. Works on laborers who migrate from one section to another section of the same country are entered under Migrant labor. Works on employment opportunities in foreign countries are entered under Employment in foreign countries.
Aliens Extraterrestrials -- See Life on other planets Here are entered works on life indigenous to outer space. Works on the prospective use of the science of anthropology in dealing with intelligent beings in outer space, or establishing earth colonies on extraterrestrial bodies, are entered under Extraterrestrial anthropology. Works on the study of processes occurring in outer space that are relevant to biology, especially the origin and evolution of life, are entered under Exobiology. Works on the biology of humans or other earth life while in outer space are entered under Space biology.