Going green isn't so hard--and it may even really pay off.
Weisman
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D003247:Conservation of Natural Resources / Q000191:economics*; D004782:Environmental Health; D006746:Hospital Bed Capacity, 500 and over; D006785:Hospitals, University / Q000191:economics; D006797:Housekeeping, Hospital / Q000191:economics / Q000379:methods*; D006801:Humans; D015143:Philadelphia