Labels like Almeria often featured a variety of international artists. Understanding the stylistic differences between these contributors is a common way for enthusiasts to categorize and value different segments of a large collection.
The string follows the naming convention often used on file-hosting sites, torrent trackers, or Usenet newsgroups for sharing "0-day" warez or digital comic archives. "Almerias" appears to be the handle or group tag of the individual who curated, scanned, or repacked this specific collection.