International Journal of Digital Earth. 2009;2(1):31-43. doi: 10.1080/17538940802585515 Q15.42025

Measuring magnetic declination with a compass, virtual globes and a global positioning system

用指南针、虚拟地球仪和全球定位系统测量磁偏角

DOI: 10.1080/17538940802585515

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