2.
Kahn: Quasars Importance In Astronomy and Physics
by Kahn, F. D., Palmer, H. P.
ISBN: 9780674741003
List Price: $5.95
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Investigating the Universe : Papers Presented to Zden?k Kopal on the Occasion of His Retirem...
by Bappu, M. K. V., Kahn, F. D.
ISBN: 9789400985360
List Price: $359.00
6.
Investigating the Universe Papers Presented to ZdenvEk Kopal on the Occasion of His Retirement
by Kahn, F. D.
ISBN: 9789027713254
List Price: $294.00