In this period he published many scientific books and manuals.

He was the author of nine scientific books and some 1,000 research papers.

The older man how spent most of his time writing scientific books and articles.

He kept in touch with other scientists and built up a library of scientific books.

They were also once used for advertisements, popular prints, and medical or scientific books.

The great majority of foreign titles were scientific books in Russian.

These remain one of the only scientific books written in poetic form.

He has published more than 200 scientific books and articles.

He is also the author of several scientific books, including:

Pretty soon I found the scientific books much more interesting than the fiction.