Cuarta Reunion Sobre la Geología Del Noroeste de Mexico y Areas Adyacentes:

[Mexico City, Mexico]: ENRO, 2000. First edition (presumed; no earlier dates stated). Large white quarto; 149 p; 28 cm Faint crease & wear to spine, gently rubbed & bumped corners, faint water stain to top-rear corner and corner of several pages, light crease to front-bottom corner, ink ownership signature to front cover & first title page, else good+ to very good(-). Paperback. ISBN: 9683681085

In Spanish & English. Scarce. Only 300 copies printed. Geology; Mexico.