prepared by Charles E. Scovil

American Association of Variable Star Observers, c1990 2nd ed.

Available at 7 libraries

compiled by Christos Papadopoulos

Pergamon Press 1979-1980

: set , v. 1: guide , v. 1: case , v. 2: guide , v. 2: case , v. 3: guide , v. 3: case

Available at 6 libraries