Industry Energy and Mining Ministry, Mining and Geology National Direction, Montevideo (Uruguay); Uruguayan Geology Society, Montevideo (Uruguay); 70 p; 2001; p. 26; 11. Latin-american Geological Meeting; Montevideo (Uruguay); 12-16 Nov 2001; 3. Uruguayan Meeting; Montevideo (Uruguay); 12-16 Nov 2001; Available from DINAMIGE Library