7:35am PDT - July 9th, 2021

RT @markkupoutanen: Interesting summer reading: Juhani Kakkuri, Memoirs From the World of Geodesy. https://t.co/NDpjt6S7xx @fgi_nls #geodes…

0 retweets   3 likes  - Jarkko Koskinen (@JarkkotKoskinen)