1993 Yearbook of Astronomy
Patrick Moore · W W Norton & Co Inc · 1993
Wikipedia
{{cite book |last=Moore |first=Patrick |title=1993 Yearbook of Astronomy |publisher=W W Norton & Co Inc |year=1993 |isbn=9780393034547}}
Patrick Moore · W W Norton & Co Inc · 1993
{{cite book |last=Moore |first=Patrick |title=1993 Yearbook of Astronomy |publisher=W W Norton & Co Inc |year=1993 |isbn=9780393034547}}