Complex sentence: Fourteen numbered paperbacks titled "Galaxy" appeared between 1965 and 1970, published by Heyne Verlag, Munich; the editor was Walter Ernsting, with Thomas Schlück as co-editor for the last five issues.
Split into simpler sentences: Fourteen numbered paperbacks titled "Galaxy" appeared between 1965 and 1970, published by Heyne Verlag, Munich. The editor was Walter Ernsting, with Thomas Schlück as co-editor for the last five issues.