Hedlund, D C. (1979). Background information to accompany folio of geologic, mineral resource, geochemical, aeromagnetic, and gravity maps of the Hillsboro and San Lorenzo quadrangles, Sierra and Grant Counties, New Mexico. Arlington: U. S. Department of the Interior.
ISBD ZitierstilBackground information to accompany folio of geologic, mineral resource, geochemical, aeromagnetic, and gravity maps of the Hillsboro and San Lorenzo quadrangles, Sierra and Grant Counties, New Mexico / by D. C. Hedlund .. . — Arlington : U. S. Department of the Interior, 1979. — IV, 26 S.; graph. Darst. — (Geological Survey circular ; 808)
MLA ZitierstilHedlund, D. C. Background Information to Accompany Folio of Geologic, Mineral Resource, Geochemical, Aeromagnetic, and Gravity Maps of the Hillsboro and San Lorenzo Quadrangles, Sierra and Grant Counties, New Mexico.Arlington: U. S. Department of the Interior, 1979.