Coordinates of the 9-inch refracting telescope at the Carter Observatory, Wellington, and Nearby Stations /

Autor Thomsen, I. L., 1910-1969
Vydáno 1946

Differences between time signals transmitted from ZLW and 2YA ; Transit of Mercury 1953 November 14d (G.M.T.) /

Autor Thomsen, I. L., 1910-1969
Vydáno 1954

Rates of stop-watches /

Autor Thomsen, I. L., 1910-1969
Vydáno 1963