On
http://anison.info/data/source/62981.html, the additional tracks referenced on the 3rd vinyl tracklist is just a mistaken add by the website.
"しゃべれないけどしあわせ" and "一人ぼっちのボク" do not then appear on this release but on the 1988 CD reissue.
So my theory is that the 1988 CD reissue follows the 4-vinyls tracklist, but some tracks are added compared to this release tracklist.
But I don't know! Maybe there's not a 19th track on the 2nd vinyl or a 17th one on the 3rd vinyl... maybe Anison Generation can be wrong!
Who knows?... Because pictures and scans of this release are quite hard to find on the Internet...