Title of this old RUSSIAN children's book? Adventure story about a boy traveling?

I read this book in Russian... although I don't know if it was translated into Russian or if it was originally Russian. It was actually a series of three books (maybe more, but three is what I read).

The book is about a boy who lives with his aunt and uncle until his explorer dad comes to take him away. They travel through I think Australia or New Zealand, and then to other places. In one book I think they're in the Himalayas.

I'd like to know the title of this, and also if it was ever translated into English. I could read it in Russian again I guess, but my Russian is kind of rusty so it would be great if it were in English.

That's the Tomek series, and they were translated from Polish. They're by Alfred Szklarski. There's no English translation.

They can all be downloaded for free online as ebooks. I got all of them off of various sites. In Russian, of course. My Russian (reading, at least) sucks... ten words a minute if I'm lucky... it's like deciphering code. LOL

Try the links I gave. The first goes to the author's wiki page which lists all the titles, and the next ones go to a site where you can download some of the book.