The magnetic character of the year 1921

The magnetic character of the year 1912

✍ van Dijk, G. 📂 Article 📅 1913 🏛 American Geophysical Union 🌐 English ⚖ 60 KB

The magnetic character of the year 1913

✍ van Dijk, G. 📂 Article 📅 1914 🏛 American Geophysical Union 🌐 English ⚖ 55 KB

The magnetic character of the year 1914

✍ van Dijk, G. 📂 Article 📅 1915 🏛 American Geophysical Union 🌐 English ⚖ 80 KB

The magnetic character of the year 1915

✍ van Dijk, G. 📂 Article 📅 1916 🏛 American Geophysical Union 🌐 English ⚖ 77 KB

The magnetic character of the year 1919

✍ van Dijk, G. 📂 Article 📅 1920 🏛 American Geophysical Union 🌐 English ⚖ 69 KB

The magnetic character of the year 1920

✍ van Dijk, G. 📂 Article 📅 1921 🏛 American Geophysical Union 🌐 English ⚖ 57 KB