It has also been published as its own separate volume.

It was finally published as a separate volume in 1948.

Unlike the separate volumes of the Mars series, it doesn't stand on its own.

A collection of his works has been reprinted in a separate volume.

Note that there is a separate volume with background, evidence and analysis.

The album was released in 1981 as three separate volumes.

Five other similar collections followed the first one, in separate volumes.

The Apocryphal books are also available in a separate volume.

They were first published as three separate volumes starting in September 1975.

Ruth suggested they each try a separate volume and see who won.