you can find all of my books which i have published in english, to download for free or to read online, on my main wordpress blog..
https://youthextension.wordpress.com/
the direct link to the article with the synopsis — a short description — for each of the four books is below..
in the article there are two links for each book — one for downloading in document format (*.pdf) to read offline and another link to read online.
_
donation.science.blog 