Environmental health and ecology: old concepts with new meaning for man's survival.
D000397:Air Pollution; D001695:Biology; D004463:Ecology; D004777:Environment; D004781:Environmental Exposure; D004782:Environmental Health; D006801:Humans; D009622:Noise; D012586:Science; D013534:Survival; D013672:Technology; D014730:Veterinary Medicine; D014876:Water Pollution