00971cam a2200181 a 450000500170000000800410001702000150005802000180007305000210009124501440011226001370025630000290039344000360042250002450045865000470070370000220075070000170077220260617084455.0881212s1989    ne a     b    100 0 eng    a0444872965  a978044487296800aGB1197.6.G7.V.3900aGroundwater economics :bselected papers from a United Nations symposium held in Barcelona, Spain /cedited by E. Custodio and A. Gurguí.  aAmsterdam ;aNew York :bElsevier ;aNew York, NY, U.S.A. :bDistributors for the U.S. and Canada, Elsevier Science Pub. Co.,c1989.  axii, 625 p. :bill.; Hbk 0aDevelopments in water science ;  aPapers presented at the Symposium and Workshop on Ground Water Economics, organized by the Curso Internacional de Hidrología Subterránea and the Centro de Estudios e Investigación del Augua, held Oct. 19-23, 1987, in Bareclona, Spain. 0aGroundwaterxEconomic aspectsxCongresses.1 aCustodio, Emilio.1 aGurguí, A.