RT @AZGeology: Medora Louise Hooper Krieger, a geologist with @USGS from the 1940s though the 1960s, mapped the Granite Dells and environs…
282 followers
117 followers
RT @AZGeology: Medora Louise Hooper Krieger, a geologist with @USGS from the 1940s though the 1960s, mapped the Granite Dells and environs…
2,669 followers
RT @AZGeology: Medora Louise Hooper Krieger, a geologist with @USGS from the 1940s though the 1960s, mapped the Granite Dells and environs…
3,924 followers
RT @AZGeology: Medora Louise Hooper Krieger, a geologist with @USGS from the 1940s though the 1960s, mapped the Granite Dells and environs…