About the book: 1988 / Greshnov M.N. Echo: Science fiction stories - M.: Young Guard, 1988. - (Library of Soviet Science Fiction). — 301 pages, 85 kopecks, 100,000 copies. (in paperback and hard cover) - signed for publication on October 13, 1988. In the science fiction stories included in the book, the writer reveals the socio-psychological features of scientific discoveries and tries to find solutions to many moral and ethical problems of our time.