1. External galaxies and quasistellar objects
Author: edited by David S. Evans, Derek Wills, Beverely J. Wills
Library: Library of Institute of Geophysics University of Tehran (Tehran)
Subject: Galaxies--congresses,Astrophysics--congresses
Classification :
QB
851
.
E9
1972
2. External galaxies and quasi-stellar objects
Author: edited by David S. Evans, Derek Wills
Library: Library of Institute of Geophysics University of Tehran (Tehran)
Subject: Galaxies--congresses
Classification :
QB
1
.
E97
1972
