?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Fedra%2C+K.&rft.aulast=Fedra&rft.aufirst=K.&rft.date=August+1990&rft.title=Interactive+modeling+of+environmental+impacts&rft.btitle=IFAC+Symposia+Series+-+Proceedings+of+a+Triennial+World+Congress&rft.genre=bookitem