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

by Thomsen, I. L., 1910-1969
Published 1946

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

by Thomsen, I. L., 1910-1969
Published 1954

Rates of stop-watches /

by Thomsen, I. L., 1910-1969
Published 1963