Lines of Equal magnetic declination and of equal annual change in Alaska

Ижил төстэй зүйлс

• Lines of equal magnetic declination and of equal annual change in the United States for 1905
  -н: Estados Unidos Coast and Geodetic Survey, зэрэг
  Хэвлэсэн: (1905)
• Base map of the United States
  -н: Estados Unidos Coast and Geodetic Survey, зэрэг
  Хэвлэсэн: (1909)
• Sketch of general progress
  -н: Estados Unidos Coast & Geodetic Survey, зэрэг
  Хэвлэсэн: (1909)
• Base map od the United States
  -н: Estados Unidos Coast and Geodetic Survey, зэрэг
  Хэвлэсэн: (1909)
• Base map of the United States
  -н: Estados Unidos Coast and Geodetic Survey, зэрэг
  Хэвлэсэн: (1909)