Roy, A. E. (Archie E.), 1924- Astronomy, structure of the universe / A.E. Roy, D. Clarke.

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Roy, A. E. (Archie E.), 1924-

Astronomy, structure of the universe / A.E. Roy, D. Clarke.

Astronomy.

Sterrenkunde. gtt

Kosmologie. gtt

Text

1977

Clarke, D. (David), 1936- joint author.