By Pearl, Richard M..
Colorado : Barnes&Noble, 1967 .
262 p. : 21 cm.

By Holmes, Arthur.
Barcelona : Omega, 1990 .
xv, 812 p. 8428205868

By Holmes, Arthur.
Barcelona : Omega, 1990 .
xv, 812 p. 8428205868

By Holmes, Arthur.
Barcelona : Omega, 1990 .
xv, 812 p. 8428205868

By Holmes, Arthur.
Barcelona : Omega, 1990 .
xv, 812 p. 8428205868

By Scott, William Berryman.
New York : The MacMillan Company, 1932 .
604 p. : 22 cm.

By Holmes, Arthur.
Barcelona : Omega, 1952 .
519 p. : 22 cm.

By Strahler, Arthur N..
Barcelona : Omega, 1992 .
629 p. : 28 cm.
8428207704