Interesting Alien PDF showing the different alien species that have visited Earth

I came across this pdf from a website claiming it was some secret Russia book which claims to had this knowledge within this ‘secret book’ but this is a interesting read so check it out. And do you know about the starchild skull? If not do a search on our site and one of these alien species looks like it has a similar skull shape. I wouldn’t put it past that something has to be real in this PDF: