Kriging of water levels in the Souss aquifer, Morocco Mohamed AboufirassiMiguel A. MariƱo OriginalPaper Pages: 537 - 551
A simple sufficient condition for a variogram model to yield positive variances under restrictions Mark R. Dunn OriginalPaper Pages: 553 - 564
The combination of sampling and kriging in the regional estimation of coal resources: Comment Didier CrozelMichel David Letters to the Editor Pages: 571 - 574
Reply to letter from Crozel and David Thomas H. StarksNancy A. BehrensJen Ho Fang Letters to the Editor Pages: 575 - 578