Commentary on interstellar matter associated with 18 open clusters /

"September 1989"--Cover.

An emission-line survey of the Milky Way /

Includes bibliographical references

Space (collection of articles)

"FTD-MT-64-239. Edited machine translation."

Recherches astronomiques de l'Observatoire d'Utrecht.

Ceased with volume 18:2. Superseded by the Bullletin of the Astronomical Institutes of the Netherlands, Supplement series.

International cooperation and competition in civilian space activities : summary

"OTA-ISC-240"--P. [36]