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Article / Letter to editor
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Hulst, H.C. van de
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Oort, J.H.
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Volders, L.M.J.S.
1959
Neutral hydrogen in M 33 and M 101
Article / Letter to editor
open access
Muller, C.A.
1959
21-cm observations on the Coma cluster
Article / Letter to editor
open access
Volders, L.M.J.S.; Hulst, H.C. van de
1959
Neutral hydrogen in extra-galactic systems
Article in monograph or in proceedings
open access
Oort, J.H.; Herk, G. van
1959
Structure and dynamics of Messier 3
Article / Letter to editor
open access
Hulst, H.C. van de
1959
Concluding lecture
Article in monograph or in proceedings
open access
Oort, J.H.; Rougoor, G.W.
1959
The interstellar gas in the central part of the galaxy
Article / Letter to editor
open access
Wentzel, D.G.
1959
Observations of M 32 at 21 cm
Article / Letter to editor
open access