Are apas zines?
No, they’re apas (amateur press associations). Members of apas produce and distribute their zines differently than most: each member makes copies of his or her zine for every member of the apa, then mails these all to a central mailer, who in turn compiles all the submitted zines into a bundle and mails a copy of the completed apazine to each member of the mailing list. (Thanks to Dale Speirs for this explanation.) And to anticipate your next three questions, no, mail art, paper newsletters and small press books aren’t zines either, though there is usually some degree of solidarity between such projects and zines.