Roy, A. E. (Archie E.), 1924-2012. Astronomy, principles and practice / A.E. Roy, D. Clarke.

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Roy, A. E. (Archie E.), 1924-2012.

Astronomy, principles and practice / A.E. Roy, D. Clarke.

Astronomy.

Astronomy fast (OCoLC)fst00819673

Sterrenkunde. gtt

Text

1982

Clarke, D. (David), 1936-