These don't seem to have issue numbers, so they're probably one-offs. The Google Earth one is called "the way one walks google earth" or "how to get around google earth." Its headline says "Travel the world while in your home!"

The other one is hyping "awesome search" and techniques for various things.

One of the images was actually by this guy. (Alainkun)
http://www.ajapon.com/informatica/google-tambien-invierte-en-publicidad/

OMG, how can that guy not mentioning me? I found it!
http://googlified.com/2007google-magazine-in-japan/

By the way, it has been proved that they are not published by Google.

Hi.
Those "magazines" are called "MOOK" mean that they are magazine and book.
They usually are not published regularly.

Those MOOKs you found are UNofficial.
And in Japan, there are tons of Google MOOKs published.
most of them are for beginners.

I've never bought one for myself, so I don't know what exactly written inside.

I'm living in Japan right now.

if it was official, you'd see the official logo.

That's an unofficial magazine.Gseeker has been reported this news.