TY - RPRT TI - 40Ar/39Ar dating studies of minerals and rocks in various areas in Mexico : USGS/CRM scientific collaboration. Part 1 AU - Alexander Iriondo AU - Michael J. Kunk AU - Jeffrey A. Winick AU - Consejo de Recursos Minerales PY - 2003 DO - 10.3133/ofr0320 UR - https://pubs.usgs.gov/publication/ofr0320 ID - ofr0320 ER -