00695nam a2200217 a 450000500170000000800410001702000150005804000270007304100080010004400080010808200190011611000380013524500610017326000490023430000330028365000090031665000250032571000390035071000580038971000300044720200104041600.0160212s1997    wau    fr|||| 001 0 eng d  a0309056403  aCO-BoIAVH cCO-BoIAVH 0 aeng  axxu04a333.9104bC73v2 bCommittee on Valuing Ground Water10aValuing ground water :beconomic concepts and approaches  aWashington :bNational Academy Press,c1997.  a189 páginas ;c24 x 16 cm.16aAgua26aAguas subterráneas2 aWater Science and Technology Board2 aCommission on Geosciences, Environment, and Resources2 aNational Research Council