The Cartography of Gypseous Soils In San Luis Potosi State, Mexico.
Víctor Manuel Ruiz-Vera
1
, Juan Felipe Martinez-Montoya
1
and Juan Herrero-Isern
2
, (1)Campus San Luis Potosi, Colegio de Postgraduados, Salinas, Mexico, (2)EEAD-CSIC, Zaragoza, Spain