Astronomy
Roy, A. E.
Astronomy principles and practice A. E. Roy, D. Clarke - 3rd edition - Bristol Institute of Physics Publishing 1988 - xvi, 357 p. fig., tab. 28 cm.
Includes index
0852743939
Αστρονομία
Αστρονομία--Μετρήσεις
520
Astronomy principles and practice A. E. Roy, D. Clarke - 3rd edition - Bristol Institute of Physics Publishing 1988 - xvi, 357 p. fig., tab. 28 cm.
Includes index
0852743939
Αστρονομία
Αστρονομία--Μετρήσεις
520