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International Space Science Symposium
Preliminary report [of the] COSPAR fifteenth plenary meeting and thirteenth International Space Science Symposium, May 10-24, 1972, Madrid, Spain
Space research
![Preliminary report [of the] COSPAR fifteenth plenary meeting and thirteenth International Space Science Symposium, May 10-24, 1972, Madrid, Spain](https://s3.amazonaws.com/readfeedstatic/book_covers/thumbnails/rf-placeholder.png)