Earth Planet Space Attack And Defense -- See Space warfare Here are entered works on interplanetary warfare, attacks on earth from outer space, and warfare among the nations of earth in outer space. Works on the military applications of space sciences are entered under Astronautics, Military.
Earth Radiation -- See Terrestrial radiation Here are entered works on the total infrared radiation emitted from the earth's surface. Works on the infrared radiation emitted by or propagated through the atmosphere are entered under Atmospheric radiation.