Astronomy
Roy, A. E. 1924-
Astronomy principles and practice / [electronic resource] : A.E. Roy, D. Clarke. - 4th ed. - Bristol ; Philadelphia : Institute of Physics Pub., c2003. - xxiii, 475 p. : ill.
Includes bibliographical references (p. 458-459) and index.
9781420057034 (ebook : PDF)
Astronomy.
Astronomy principles and practice / [electronic resource] : A.E. Roy, D. Clarke. - 4th ed. - Bristol ; Philadelphia : Institute of Physics Pub., c2003. - xxiii, 475 p. : ill.
Includes bibliographical references (p. 458-459) and index.
9781420057034 (ebook : PDF)
Astronomy.