Look at ftp://pasture.ecn.purdue.edu/pub/mccauley/grass Agus *************************************************** Dr. Agustin Lobo Instituto de Ciencias de la Tierra (CSIC) Marti Franques s/n 08028 Barcelona (Spain) tel. 34 3 330 2716 fax. 34 3 411 0012 alobo at ija.csic.es alobo at eno.princeton.edu ***************************************************