Chronological listings, from 1900 through 1981, of significant discoveries and developments in medicine, communications, transport, energy, food technology, and other fields.
Presents an overview of hurricanes, tornadoes, droughts, blizzards, floods, and other types of dangerous weather, provides a time line of catastrophic weather events from c. 3200 B.C. to 1997, features a chronology of meteorological discovery, and includes a selection of weather experiments.
Provides information about various aspects of World War I, discussing the causes and outbreak of the war, different battles and fronts, and the end of hostilities, and features a time line of key events and developments over the course of the entire war, as well as topical time lines.
An illustrated, historical overview of World War II, focusing on the European and African campaigns, and featuring time lines, photographs, and text describing the Munich Conference, Blitzkrieg, Operation Barbarossa, D-Day, and related topics.
