Lines of equal magnetic declination and of equal annual change in the United States for 1905

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Ngā kaituhi matua: Estados Unidos Coast and Geodetic Survey, Norris Peters Co
Hōputu: Mahere whenua
Reo:Ingarihi
I whakaputaina: U. S. Coast and Geodetic Survey
Ngā Tūtohu: Tāpirihia he Tūtohu
Kāore He Tūtohu, Me noho koe te mea tuatahi ki te tūtohu i tēnei pūkete!
Whakaahuatanga
Whakaahuatanga ōkiko:1 mapa
p&b, com traçados color.
55,00X71,00 cm, em folha de 60,00x76,00 cm