Oort and the universe : a sketch of Oort's research and person : liber amicorum presented to Jan Hendrik Oort on the occasion of his 80th birthday, 28 April 1980 / edited by Hugo van Woerden, Willem N. Brouw, and Henk C. van de Hulst.
Oort and the universe : a sketch of Oort's research and person : liber amicorum presented to Jan Hendrik Oort on the occasion of his 80th birthday, 28 April 1980 / edited by Hugo van Woerden, Willem N. Brouw, and Henk C. van de Hulst.