Complex sentence: Her first book, "Phenomena", appeared in 1953, and Vestly has written numerous adult books, mostly about everyday family life in the 1950s, 1960s and 1970s.
Split into simpler sentences: Her first book, "Phenomena", was published in 1953. It is one of the numerous adult books Vestly has written, mainly about everyday family life in the 1950s, 1960s and 1970s.